Library / Engineering & Technology
Engineering & Technology
Steam engines, lathes, telegraphs, aeroplanes, fireworks and everything in between — the workshop shelf, 1700s to early 1900s. 999 books.
999 shown
| Title | Author | Language | Released | Size | # |
|---|---|---|---|---|---|
| 'Return Loads' to Increase Transport Resources by Avoiding Waste of Empty Vehicle Running. | US Government | English | November 11, 2006 | 30.2K | 19757 |
| "Puffing Billy" and the Prize "Rocket" | Helen C. Knight | English | June 5, 2012 | 181.7K | 39926 |
| 40 years / 40 años / 40 ans | Marie Lebert | English, Spanish, French | December 23, 2010 | 154.2K | 34731 |
| A boy's text book on gas engines | Fay Leone Faurote | English | October 31, 2023 | 62.2K | 71991 |
| A brief sketch of the work of Matthew Fontaine Maury during the war, 1861-1865 | Richard L. Maury | English | October 14, 2010 | 76.3K | 34068 |
| A Catechism of the Steam Engine | — | English | — | 821.8K | 10998 |
| A Complete List of the Books Included in the S. & C. Series of Elementary Manuals for Mechanics and Students published by E. & F. N. Spon, Ltd., London. January 1912 | — | English | August 2, 2013 | 40.8K | 43384 |
| A Course In Wood Turning | Archie S. Milton and Otto K. Wohlers | English | March 25, 2005 | 99.3K | 15460 |
| A Description of a New-Invented Stove-Grate | J. Durno | English | December 18, 2020 | 54.9K | 64077 |
| A Dictionary of Arts, Manufactures and Mines | Andrew Ure | English | January 1, 2014 | 6.4M | 44562 |
| A few secrets of the metallurgist simply told | Gerald Watson Hinkley | English | February 9, 2025 | 91.8K | 75326 |
| A General Plan for a Mail Communication by Steam, Between Great Britain and the Eastern and Western Parts of the World | James MacQueen | English | February 27, 2007 | 326.1K | 20702 |
| A handbook of laboratory glass-blowing | Bernard D. Bolas | English | June 24, 2010 | 127.8K | 32962 |
| A Historical Account of Useful Inventions and Scientific Discoveries | George Grant | English | November 27, 2016 | 476.3K | 53613 |
| A History of Aeronautics | Evelyn Charles Vivian | English | November 25, 2018 | 861.6K | 58347 |
| A History of Aeronautics | Evelyn Charles Vivian | English | April 1, 1997 | 809.5K | 874 |
| A History of Inventions, Discoveries, and Origins, Volume 2 (of 2) | Johann Beckmann | English | February 4, 2015 | 1.4M | 48152 |
| A History of the Growth of the Steam-Engine | Robert Henry Thurston | English | April 19, 2011 | 873.0K | 35916 |
| A Letter to the Kensington Canal Company on the Substitution of the Pneumatic Railway for the Common Railway by Which They Contemplate Extending Their Line of Conveyance | John Vallance | English | May 16, 2020 | 300.1K | 62153 |
| A Lost Chapter in the History of the Steamboat | John H. B. Latrobe | English | September 7, 2020 | 89.3K | 63140 |
| A manual of face brick construction | — | English | November 1, 2022 | 253.6K | 69285 |
| A manual of pyrotechny | G. W. Mortimer | English | January 22, 2019 | 245.0K | 58756 |
| A Manual of Shoemaking and Leather and Rubber Products | William H. Dooley | English | September 1, 2017 | 282.3K | 55474 |
| A Manual of the Hand Lathe | Egbert P. Watson | English | February 6, 2015 | 151.8K | 48179 |
| A Method of Tanning without Bark | William Maple | English | July 24, 2018 | 55.5K | 57576 |
| A New Century of Inventions | James White | English | June 15, 2013 | 574.0K | 42951 |
| A new discovery for finding the longitude | William Hobbs | English | January 4, 2025 | 44.6K | 75039 |
| A Newly Discovered System of Electrical Medication | Daniel Clark | English | December 11, 2007 | 178.7K | 23813 |
| A Pioneer Railway of the West | Maude Ward Lafferty | English | November 14, 2008 | 84.1K | 27256 |
| A Practical Manual of the Collodion Process, Giving in Detail a Method For Producing Positive and Negative Pictures on Glass and Paper. | S. D. Humphrey | English | October 21, 2020 | 348.7K | 63517 |
| A practical treatise on coach-building historical and descriptive | James W. Burgess | English | November 3, 2023 | 351.7K | 72016 |
| A Practical Treatise on Gas-light | Friedrich Christian Accum | English | January 2, 2014 | 270.0K | 44567 |
| A Project for Flying- In Earnest at Last! | — | English | — | 55.4K | 11244 |
| A Select Collection of Valuable and Curious Arts and Interesting Experiments, | Unknown | English | November 20, 2011 | 171.7K | 38067 |
| A short history of the printing press and of the improvements in printing machinery from the time of Gutenberg up to the present day | Robert Hoe | English | October 25, 2020 | 110.0K | 63545 |
| A Story of the Telegraph | John Murray | English | January 7, 2016 | 335.2K | 50864 |
| A Succinct View of the Importance and Practicability of Forming a Ship Canal across the Isthmus of Panama | H. R. Hill | English | June 29, 2009 | 62.5K | 29269 |
| A system of pyrotechny | James Cutbush | English | March 21, 2015 | 1.6M | 48539 |
| À terre & en l'air... | Félix Nadar | French | March 6, 2009 | 665.5K | 28258 |
| A Text-book of Paper-making | C. F. Cross | English | March 4, 2018 | 467.5K | 56679 |
| A Treatise on Hat-Making and Felting | hatter John Thomson | English | October 10, 2014 | 118.2K | 47090 |
| A Treatise on Staff Making and Pivoting | Eugene E. Hall | English | January 8, 2007 | 76.2K | 20317 |
| A treatise on the origin, progress, prevention, and cure of dry rot in timber | Thomas Allen Britton | English | September 13, 2017 | 568.3K | 55541 |
| A-B-C of Electricity | Wm. H. Meadowcroft | English | June 13, 2014 | 148.3K | 45955 |
| ABC of the steel square and its uses | Fred T. Hodgson | English | June 24, 2015 | 146.7K | 49273 |
| Account of the Skerryvore lighthouse | Alan Stevenson | English | January 26, 2025 | 1.1M | 75213 |
| Acetylene, the Principles of Its Generation and Use | F. H. Leeds | English | May 1, 2005 | 1.0M | 8144 |
| Acoustics of auditoriums | Floyd Rowe Watson | English | February 10, 2023 | 80.3K | 70013 |
| Aeolus; or, the future of the flying machine | Major Oliver Stewart | English | October 5, 2025 | 141.3K | 76988 |
| Aërial Navigation | Albert Francis Zahm | English | September 11, 2019 | 852.9K | 60277 |
| Aeroplane construction | Sydney Camm | English | May 8, 2024 | 233.4K | 73566 |
| Aeroplane Construction and Operation | — | English | July 22, 2020 | 664.2K | 62729 |
| Aeroplanes | — | English | — | 274.6K | 1445 |
| Agricultural Implements and Machines in the Collection of the National Museum of History and Technology | John T. Schlebecker | English | November 25, 2008 | 189.2K | 27327 |
| Aircraft | Evan John David | English | September 3, 2024 | 612.6K | 74358 |
| Aircraft and Submarines | Willis J. Abbot | English | September 20, 2009 | 721.3K | 30047 |
| Aircraft in war | Eric Stuart Bruce | English | September 27, 2023 | 220.1K | 71736 |
| Airplane Photography | Herbert Eugene Ives | English | November 12, 2016 | 501.3K | 53508 |
| American Handbook of the Daguerrotype | Samuel D. Humphrey | English | September, 1994 | 270.3K | 167 |
| American Horological Journal, Vol. I, No. 1, July 1869: Devoted to Pratical Horology | — | English | April 17, 2022 | 129.1K | 67859 |
| American Inventions and Inventors | William A. Mowry | English | November 1, 2014 | 450.3K | 47258 |
| American Rural Highways | T. R. Agg | English | July 16, 2009 | 265.1K | 29420 |
| An account of a useful discovery to distill double the usual quantity of sea-water, by blowing showers of air up through the distilling liquor | Stephen Hales | English | July 1, 2023 | 99.1K | 71081 |
| An Account of the Bell Rock Light-House | Robert Stevenson | English | March 5, 2015 | 1.4M | 48414 |
| An Analysis of the Lever Escapement | H. R. Playtner | English | June 30, 2007 | 113.0K | 21978 |
| An Attempt to Analyse the Automaton Chess Player of Mr. De Kempelen | Robert Willis | English | February 15, 2020 | 51.5K | 61410 |
| An ice cream laboratory guide | W. W. Fisk | English | October 23, 2025 | 115.8K | 77115 |
| An Illustrated Directory of the Specifications of All Domestic and Foreign Motor-cars and Motor Business Wagons, Gasoline, Steam and Electric, Sold in This Country, 1907 | the automotive business magazine Motor | English | April 6, 2021 | 742.3K | 65005 |
| An Introduction to Machine Drawing and Design | David Allan Low | English | March 4, 2012 | 178.7K | 39033 |
| An Unsinkable Titanic: Every Ship its own Lifeboat | John Bernard Walker | English | July 7, 2014 | 158.8K | 46219 |
| Ancient and modern engineering and the Isthmian canal | William H. Burr | English | April 19, 2025 | 949.5K | 75910 |
| Ancient Egyptian and Greek Looms | H. Ling Roth | English | June 8, 2008 | 107.1K | 25731 |
| Animal Proteins | Hugh Garner Bennett | English | October 26, 2012 | 576.3K | 41192 |
| Apontamentos sobre a via de communicação do rio Madeira | Antonio Pereira Rebouças | Portuguese | October 26, 2007 | 145.8K | 23201 |
| Appletons' Popular Science Monthly, January 1900 | Various | English | October 23, 2014 | 315.3K | 47180 |
| Army Pulse Radiation Facility | — | English | May 19, 2022 | 42.1K | 68120 |
| Artificial and Natural Flight | Hiram S. Maxim | English | April 7, 2014 | 327.5K | 45344 |
| Artificial fire-works | Robert Jones | English | January 16, 2021 | 312.3K | 64306 |
| Artificial Light | M. Luckiesh | English | January 29, 2006 | 609.9K | 17625 |
| Artificial Limbs | Auguste Broca | English | October 13, 2017 | 256.4K | 55739 |
| Asbestos, Its production and use | Robert H. Jones | English | January 30, 2011 | 153.3K | 35121 |
| ASCE 1193: The Water-Works and Sewerage of Monterrey, N. L., Mexico | G. R. G. Conway | English | December 31, 2011 | 291.7K | 38455 |
| Astronomical Instruments and Accessories | William Gaertner and Company | English | December 10, 2008 | 51.0K | 27477 |
| Atoms at the Science Fair: Exhibiting Nuclear Projects | Robert G. LeCompte | English | July 21, 2021 | 110.1K | 65893 |
| Attack of Fortified Places. Including Siege-works, Mining, and Demolitions. | James Mercur | English | April 11, 2019 | 375.8K | 59253 |
| Autobiography of Sir John Rennie, F.R.S., Past President of the Institute of Civil Engineers | Sir John Rennie | English | March 12, 2017 | 905.3K | 54347 |
| Automata Old and New | Conrad William Cooke | English | October 26, 2017 | 127.5K | 55817 |
| Automobile Biographies | Lyman Horace Weeks | English | January 21, 2013 | 271.4K | 41891 |
| Automobiles | James Slough Zerbe | English | June 7, 2024 | 303.3K | 73790 |
| Aviation Book | Haywood Leslie Davis | English | June 25, 2020 | 45.6K | 62472 |
| Aviation Engines: Design—Construction—Operation and Repair | Victor Wilfred Pagé | English | December 2, 2011 | 1.0M | 38187 |
| Aviation in Peace and War | Sir Frederick Hugh Sykes | English | April 30, 2008 | 224.7K | 25244 |
| Bad Drains; and How to Test Them | R. Harris Reeves | English | November 18, 2019 | 165.5K | 60721 |
| Bailey's Dam | Steven D. Smith | English | May 8, 2020 | 67.9K | 62052 |
| Balloons, Airships, and Flying Machines | Gertrude Bacon | English | May 27, 2017 | 160.0K | 54799 |
| Bamboo, Considered as a Paper-making Material | Thomas Routledge | English | February 2, 2017 | 74.9K | 54090 |
| Bangerter's Inventions; His Marvelous Time Clock | — | English | May 25, 2016 | 102.9K | 52161 |
| Books Relating to Applied Science, Published by E & F. N. Spon, 1887. | E. & F. N. Spon | English | April 18, 2019 | 80.5K | 59308 |
| Books Relating to Applied Science, Published by E. & F. N. Spon, 1890. | E. & F. N. Spon | English | May 22, 2021 | 86.4K | 65412 |
| Bowling Catalog E | Narragansett Machine Company | English | June 16, 2018 | 47.4K | 57337 |
| Boynton bicycle railway system | — | English | November 23, 2024 | 83.3K | 74783 |
| Boys' second book of inventions | Ray Stannard Baker | English | November 15, 2013 | 262.8K | 44188 |
| Bridge Disasters in America: The Cause and the Remedy | George L. Vose | English | October 9, 2009 | 98.1K | 30223 |
| British Airships, Past, Present, and Future | George Whale | English | December 1, 1996 | 267.7K | 762 |
| British Canals: Is their resuscitation practicable? | Edwin A. Pratt | English | November 23, 2014 | 293.7K | 47435 |
| British Manufacturing Industries: Pottery, Glass and Silicates, Furniture and Woodwork. | Léon Arnoux | English | February 24, 2012 | 361.7K | 38953 |
| Building and Flying an Aeroplane | — | English | August 18, 2020 | 291.9K | 62973 |
| Building with logs | Clyde P. Fickes | English | April 28, 2019 | 76.3K | 59380 |
| C.A. Coey's School of Motoring, 1424-26 Michigan Ave. Chicago | Charles Andrew Coey | English | June 28, 2015 | 49.7K | 49307 |
| Careers in Atomic Energy | Loyce J. McIlhenny | English | May 1, 2013 | 68.5K | 42626 |
| Carpentry | Ira Samuel Griffith | English | March 7, 2023 | 272.9K | 70226 |
| Carpets | R. S. Brinton | English | December 13, 2018 | 218.4K | 58469 |
| Carriages & Coaches: Their History & Their Evolution | Ralph Straus | English | July 7, 2014 | 533.5K | 46216 |
| Catechism of the locomotive | Matthias N. Forney | English | June 25, 2025 | 906.2K | 76379 |
| Cedar chests, how to make them | Ralph Flagg Windoes | English | March 8, 2025 | 80.6K | 75563 |
| Central-Station Electric Lighting | Killingworth Hedges | English | January 22, 2020 | 279.3K | 61219 |
| Chambers's Edinburgh Journal, No. 451 | Various | English | July 30, 2007 | 139.7K | 22178 |
| Chambers's Edinburgh Journal, No. 455 | Various | English | October 28, 2007 | 139.9K | 23226 |
| Chambers's Journal of Popular Literature, Science, and Art, Fifth Series, No. 40, Vol. I, October 4, 1884 | Various | English | September 29, 2021 | 116.1K | 66418 |
| Chats on Old Clocks | Arthur Hayden | English | May 26, 2014 | 270.4K | 45772 |
| Chimneys & Fireplaces | Ara Marcus Daniels | English | February 25, 2015 | 75.8K | 48360 |
| Coal, and What We Get from It | Raphael Meldola | English | July 15, 2010 | 295.9K | 33165 |
| Collotype and Photo-lithography | Julius Schnauss | English | September 3, 2015 | 255.5K | 49866 |
| Color Images from Mars Rovers | Bob Webster | English | April 19, 2004 | 42.3K | 12082 |
| Comparison of Methods of Sewage Purification | Theodore Clifford Phillips | English | July 24, 2019 | 64.6K | 59980 |
| Comparison of Woods for Butter Boxes | Grover Dean Turnbow | English | February 8, 2022 | 43.8K | 67359 |
| Computers on the Farm | Deborah Takiff Smith | English | April 20, 2019 | 88.7K | 59316 |
| Computers—the machines we think with | D. S. Halacy | English | January 1, 2024 | 505.1K | 72572 |
| Concrete Construction for the Home and the Farm | Atlas Portland Cement Company | English | June 2, 2020 | 217.5K | 62312 |
| Concrete Construction: Methods and Costs | Halbert Powers Gillette | English | March 16, 2008 | 1.3M | 24855 |
| Conservation Through Engineering | Franklin K. Lane | English | April 6, 2010 | 120.4K | 31899 |
| Cork: Being the story of the origin of cork, the processes employed in its manufacture & its various uses in the world to-day | Armstrong Cork Company | English | January 30, 2023 | 49.7K | 69909 |
| Cork: Its Origin and Industrial Uses | Gilbert Erwin Stecher | English | July 31, 2012 | 172.8K | 40376 |
| Cottage Building in Cob, Pisé, Chalk and Clay: A Renaissance (2nd edition) | Clough Williams-Ellis | English | April 19, 2010 | 254.3K | 32048 |
| Cotton Manufacturing | Christopher Parkinson Brooks | English | August 13, 2018 | 342.8K | 57681 |
| Cotton Weaving and Designing | John T. Taylor | English | April 23, 2018 | 512.5K | 57031 |
| Cotton, Its Progress from the Field to the Needle | Anonymous | English | July 27, 2011 | 33.9K | 36870 |
| Cycling art, energy, and locomotion | Robert P. Scott | English | December 18, 2024 | 418.5K | 74928 |
| Cyclopedia of Telephony & Telegraphy Vol. 1 | Kempster Miller | English | April 14, 2005 | 802.0K | 15617 |
| Cyclopedia of Telephony and Telegraphy, Vol. 2 | American School of Correspondence | English | August 15, 2010 | 709.0K | 33437 |
| D.C. Powered Timing Light Model 161.2158 for 12 Volt Ignition Systems | — | English | May 16, 2012 | 28.4K | 39714 |
| Darstellende Geometrie des Geländes | Rudolf Rothe | German | October 21, 2018 | 209.6K | 58148 |
| Das lebende Lichtbild: Entwicklung, Wesen und Bedeutung des Kinematographen | Franz Paul Liesegang | German | December 11, 2017 | 126.4K | 56164 |
| De aardbeving van San Francisco | Hugo de Vries | Dutch | April 21, 2006 | 135.7K | 18221 |
| De afsluiting en droogmaking der Zuiderzee. Weerlegging van bezwaren. | A. A. Beekman | Dutch | December 27, 2011 | 297.2K | 38426 |
| De drooglegging der Zuiderzee. Het plan J. Ulehake contra het plan C. Lely | J. Ulehake | Dutch | June 3, 2011 | 54.3K | 36319 |
| De l'imprimé à Internet | Marie Lebert | French | October 26, 2008 | 511.8K | 27031 |
| De Re Metallica, Translated from the First Latin Edition of 1556 | Georg Agricola | English | November 14, 2011 | 1.8M | 38015 |
| Debian GNU/Linux : Guide to Installation and Usage | John Goerzen | English | September 1, 2004 | 399.3K | 6527 |
| Deeds Barn and the Self Starter | Anonymous | English | March 15, 2021 | 69.6K | 64831 |
| Del libro impreso al libro digital | Marie Lebert | Spanish | October 17, 2010 | 298.6K | 34091 |
| Delco Radio Owner's Manual Model 633; Delcotron Generator Installation | Delco-Remy Corporation | English | February 26, 2010 | 41.1K | 31407 |
| Der Schiffbau seit seiner Entstehung, Band 1 | E. van Konijnenburg | German | April 17, 2025 | 463.8K | 75889 |
| Der Vogelflug als Grundlage der Fliegekunst | Otto Lilienthal | German | April 18, 2017 | 352.2K | 54565 |
| Der Weltverkehr | Michael Geistbeck | German | September 12, 2016 | 1.3M | 53037 |
| Description of the Process of Manufacturing Coal Gas, for the Lighting of Streets Houses, and Public Buildings | Friedrich Christian Accum | English | September 4, 2020 | 417.6K | 63117 |
| Descriptive Pamphlet of the Richmond Mill Furnishing Works | Richmond Mill Furnishing Works | English | March 19, 2016 | 210.0K | 51500 |
| Design of a Steel Railroad Warehouse | Louis Liston Tallyn | English | July 9, 2020 | 38.1K | 62597 |
| Development of Gravity Pendulums in the 19th Century | Victor F. Lenzen | English | January 21, 2011 | 169.9K | 35024 |
| Development of the Phonograph at Alexander Graham Bell's Volta Laboratory | Leslie J. Newville | English | September 27, 2009 | 47.3K | 30112 |
| Die Akkumulatoren: ihre Theorie, Herstellung, Behandlung und Verwendung. | Willibald Bermbach | German | April 2, 2016 | 328.4K | 51638 |
| Die Anfänge der Naturbeherrschung. 1. Frühformen der Mechanik | Karl Weule | German | November 5, 2017 | 202.8K | 55892 |
| Die Casting: Dies—Machines—Methods | Chester L. Lucas | English | September 17, 2016 | 101.7K | 53064 |
| Die Festungen gegenüber den gezogenen Geschützen | M. von Prittwitz | German | August 22, 2010 | 61.7K | 33491 |
| Die Geschichte der Dampfmaschine bis James Watt | Max Geitel | German | March 26, 2016 | 318.1K | 51567 |
| Die Luftschiffahrt der Gegenwart | Hermann Hoernes | German | April 10, 2013 | 502.5K | 42489 |
| Die Säge: Ein Rückblick auf vier Jahrtausende | Franz M. Feldhaus | German | June 2, 2019 | 102.6K | 59659 |
| Die Technik der Lastenförderung einst und jetzt | Otto Kammerer | German | August 4, 2018 | 405.7K | 57636 |
| Die Welt auf Schienen | Artur Fürst | German | November 12, 2016 | 1.4M | 53514 |
| Digital PDP15 Price List, April, 1970 | Digital Equipment Corporation | English | August 28, 2011 | 45.1K | 37237 |
| Direct Conversion of Energy | William R. Corliss | English | August 11, 2021 | 87.3K | 66033 |
| Dirigible Balloons | — | English | September 18, 2020 | 149.2K | 63234 |
| Discoveries and Inventions of the Nineteenth Century | Robert Routledge | English | April 2, 2017 | 2.3M | 54475 |
| Down Town Brooklyn | N.Y.). Committee of Ten Brooklyn (New York | English | July 15, 2010 | 70.7K | 33172 |
| Early American Scientific Instruments and Their Makers | Silvio A. Bedini | English | March 14, 2012 | 331.0K | 39141 |
| Earth dams, a study | Burr Bassell | English | August 9, 2022 | 151.0K | 68721 |
| Earthwork Slips and Subsidences upon Public Works | John Newman | English | December 5, 2017 | 523.1K | 56132 |
| Economy of the Round Dairy Barn | Wilber J. Fraser | English | December 16, 2011 | 74.0K | 38321 |
| Edison: His Life and Inventions | Frank Lewis Dyer | English | January 21, 2006 | 1.5M | 820 |
| El ebook tiene 40 años (1971-2011) | Marie Lebert | Spanish | August 6, 2011 | 277.4K | 36986 |
| El Proyecto Gutenberg (1971-2009) | Marie Lebert | Spanish | March 13, 2010 | 58.2K | 31633 |
| Elastic and non-elastic narrow fabrics | Samuel Brown | English | July 21, 2022 | 184.1K | 68583 |
| Electric Bells and All About Them: A Practical Book for Practical Men | Selimo Romeo Bottone | English | March 4, 2012 | 286.0K | 39053 |
| Electric Gas Lighting: How to Install Electric Gas Ignition Apparatus | H. S. Norrie | English | February 11, 2013 | 125.5K | 42073 |
| Electric railways | James Raley Cravath | English | February 4, 2025 | 292.4K | 75289 |
| Electric Transmission of Water Power | Alton D. Adams | English | February 1, 2015 | 721.4K | 48134 |
| Electricity for Boys | James Slough Zerbe | English | September 25, 2007 | 268.9K | 22766 |
| Electricity for the farm | Frederick Irving Anderson | English | November 14, 2008 | 296.8K | 27257 |
| Electricity in Locomotion | Adam Gowens Whyte | English | February 17, 2016 | 194.8K | 51242 |
| Elektrotechnisches Experimentierbuch: Eine Anleitung zur Ausführung elektrotechnischer Experimente unter Verwendung einfachster, meist selbst herzustellender Hilfsmittel | Eberhard Schnetzler | German | December 11, 2022 | 614.9K | 69522 |
| Elementary Course in Woodwork | George Alexander Ross | English | October 26, 2021 | 130.8K | 66616 |
| Elementary lathe practice | T. J. Palmateer | English | September 24, 2025 | 65.3K | 76925 |
| Elements of Plumbing | Samuel Edward Dibble | English | May 1, 2008 | 277.4K | 25269 |
| Elevator Systems of the Eiffel Tower, 1889 | Robert M. Vogel | English | May 7, 2010 | 104.8K | 32282 |
| Emil Rathenau und das elektrische Zeitalter | Felix Pinner | German | July 24, 2017 | 1006.9K | 55188 |
| Encyclopaedia Britannica, 11th Edition, "Armour Plates" to "Arundel, Earls of" | Various | English | October 29, 2010 | 1.2M | 34162 |
| Encyclopaedia Britannica, 11th Edition, "Destructors" to "Diameter" | Various | English | September 24, 2009 | 474.6K | 30073 |
| Encyclopaedia Britannica, 11th Edition, "Hydromechanics" to "Ichnography" | Various | English | July 29, 2012 | 1.1M | 40370 |
| Encyclopaedia Britannica, 11th Edition, "Joints" to "Justinian I." | Various | English | October 6, 2012 | 1.1M | 40956 |
| Engineer Port Repair Ship | United States. War Department | English | September 21, 2018 | 80.3K | 57941 |
| Engineering Bulletin No 1: Boiler and Furnace Testing | Rufus T. Strohm | English | December 20, 2006 | 72.9K | 20146 |
| Engineering reminiscences contributed to "Power" and "American machinist" | Charles T. Porter | English | November 5, 2023 | 714.8K | 72043 |
| Engineers and their triumphs | F. M. Holmes | English | October 2, 2022 | 245.0K | 69084 |
| English and American tool builders | Joseph Wickham Roe | English | November 5, 2023 | 608.0K | 72046 |
| Essays on the Microscope | George Adams | English | January 14, 2020 | 1.4M | 61169 |
| Essex Terraplane Six 1933 Owner's Manual of Information | Hudson Motor Car Company | English | October 27, 2011 | 44.5K | 37863 |
| Every-day Science: Volume 6. The Conquest of Nature | Henry Smith Williams | English | December 24, 2013 | 538.5K | 44502 |
| Every-day Science: Volume 7. The Conquest of Time and Space | Henry Smith Williams | English | September 27, 2013 | 509.9K | 43819 |
| Experimental Mechanics | Robert S. Ball | English | April 1, 2020 | 564.9K | 61732 |
| Experiments with Alternate Currents of High Potential and High Frequency | — | English | — | 225.8K | 13476 |
| Facts and Figures Concerning the Hoosac Tunnel | John J. Piper | English | September 8, 2012 | 128.2K | 40709 |
| Famous days in the century of invention | Gertrude L. Stone | English | June 30, 2014 | 188.7K | 46150 |
| Farm Engines and How to Run Them: The Young Engineer's Guide | James H. Stephenson | English | October 2, 2013 | 372.7K | 43867 |
| Farm Mechanics: Machinery and Its Use to Save Hand Labor on the Farm. | Herbert A. Shearer | English | May 25, 2012 | 336.4K | 39791 |
| Farming with Dynamite: A Few Hints to Farmers | E.I. du Pont de Nemours & Company | English | May 31, 2012 | 35.7K | 39869 |
| Fences, Gates and Bridges: A Practical Manual | — | English | December 11, 2018 | 223.5K | 58452 |
| Field artillery materiel | — | English | October 25, 2023 | 569.8K | 71954 |
| Fire prevention and fire extinction | James Braidwood | English | August 27, 2008 | 345.6K | 26440 |
| Flat Machine Knitting and Fabrics | H. D. Buck | English | April 26, 2018 | 257.8K | 57054 |
| Flying Machines Today | William D. Ennis | English | March 17, 2016 | 226.2K | 51481 |
| Flying Machines: Construction and Operation | William J. Jackman | English | May 1, 1997 | 322.7K | 907 |
| Ford Manual for Owners and Operators of Ford Cars and Trucks (1919) | Ford Motor Company | English | July 7, 2014 | 145.5K | 46206 |
| Forge work | William L. Ilgen | English | December 31, 2016 | 308.7K | 53854 |
| Free as in Freedom: Richard Stallman's Crusade for Free Software | Sam Williams | English | May 1, 2004 | 471.4K | 5768 |
| Friction, Lubrication and the Lubricants in Horology | W. T. Lewis | English | January 19, 2011 | 156.9K | 35001 |
| From Paper-mill to Pressroom | William Bond Wheelwright | English | January 13, 2015 | 197.2K | 47959 |
| From trail to railway through the Appalachians | Albert Perry Brigham | English | October 19, 2023 | 261.6K | 71908 |
| From xylographs to lead molds; A.D. 1440-A.D. 1921 | H. C. Forster | English | August 24, 2010 | 97.0K | 33497 |
| Fulton's "Steam Battery": Blockship and Catamaran | Howard Irving Chapelle | English | February 4, 2010 | 115.4K | 31179 |
| F�te a�rostatique, qui sera c�l�br�e aujourd'hui au champ de Mars; Ar�ostation: �tablissement d'une compagnie a�ronautique | Anonymous | French | June 6, 2006 | 32.7K | 18518 |
| Garden Cities of To-Morrow | Sir Ebenezer Howard | English | June 29, 2014 | 285.2K | 46134 |
| Gas and Oil Engines, Simply Explained | Walter C. Runciman | English | November 17, 2008 | 101.8K | 27286 |
| Gas and Petroleum Engines | H. de Graffigny | English | April 19, 2019 | 219.8K | 59311 |
| Gas Burners Old and New | Owen Merriman | English | November 5, 2011 | 187.8K | 37928 |
| Gas-Engines and Producer-Gas Plants | Rodolphe Edgard Mathot | English | December 26, 2011 | 405.7K | 38415 |
| Gasoline and Oil Stoves, "New Process" and "Standard." 1901 | Standard Lighting Company | English | March 22, 2017 | 160.0K | 54399 |
| Geld und Erfahrung | Max Eyth | German | October 30, 2015 | 267.8K | 50344 |
| Genius rewarded | John Scott | English | June 15, 2025 | 96.4K | 76314 |
| German Science Reader | Charles Frederick Kroeh | German, English | September 16, 2007 | 216.1K | 22627 |
| Getting Gold: A Practical Treatise for Prospectors, Miners and Students | J. C. F. Johnson | English | April 13, 2006 | 317.2K | 3679 |
| Giant brains; or, Machines that think | Edmund Callis Berkeley | English | September 14, 2022 | 555.2K | 68991 |
| Glass and Glass Manufacture | Percival Marson | English | October 9, 2020 | 224.5K | 63421 |
| Glass Manufacture | Walter Rosenhain | English | August 5, 2016 | 476.9K | 52724 |
| Glen Canyon Dam | — | English | July 24, 2019 | 39.8K | 59979 |
| Glue, gelatine, animal charcoal, phosphorous, cements, pastes and mucilages | F. Dawidowsky | English | October 25, 2016 | 549.2K | 53363 |
| Great Facts | Frederick C. Bakewell | English | March 13, 2014 | 459.6K | 45124 |
| Great Inventions and Discoveries | Willis Duff Piercy | English | September 30, 2011 | 274.6K | 37574 |
| Great Western Railway Instructions | William Wylie Grierson | English | July 12, 2018 | 26.7K | 57491 |
| Gunnery in 1858: Being a Treatise on Rifles, Cannon, and Sporting Arms | William Greener | English | September 23, 2013 | 779.8K | 43799 |
| Gunpowder and Ammunition, Their Origin and Progress | H. W. L. Hime | English | March 22, 2017 | 421.4K | 54411 |
| H. G. Hawker, airman: his life and work | Muriel Hawker | English | March 11, 2021 | 535.7K | 64793 |
| Hackers, Heroes of the Computer Revolution. Chapters 1 and 2 | Steven Levy | English | November 1, 1996 | 107.2K | 729 |
| Hand-craft | John D. Sutcliffe | English | September 16, 2011 | 89.4K | 37447 |
| Handbook for Light Artillery | A. B. Dyer | English | March 24, 2020 | 953.4K | 61672 |
| Handbook of Railroad Construction; For the use of American engineers. | George L. Vose | English | March 6, 2018 | 902.0K | 56688 |
| Handbuch der chemischen Technologie | Johannes Rudolf Wagner | German | January 7, 2018 | 3.8M | 56330 |
| Handbuch der Geschichte der Buchdruckerkunst. Zweiter Teil | Carl Berendt Lorck | German | December 9, 2019 | 1.1M | 60888 |
| Handbuch der praktischen Kinematographie | Franz Paul Liesegang | German | November 15, 2012 | 562.5K | 41367 |
| Hardware, estimating, and mill design | — | English | February 8, 2024 | 612.8K | 72897 |
| Harper's Electricity Book for Boys | Joseph H. Adams | English | February 18, 2021 | 633.9K | 64592 |
| Harper's New Monthly Magazine, Volume 2, No. 12, May, 1851. | Various | English | January 12, 2010 | 794.7K | 30943 |
| Hawkins Electrical Guide v. 01 (of 10) | N. Hawkins | English | December 22, 2011 | 357.3K | 38384 |
| Hawkins Electrical Guide v. 02 (of 10) | N. Hawkins | English | May 2, 2015 | 304.7K | 48846 |
| Hawkins Electrical Guide v. 03 (of 10) | N. Hawkins | English | August 24, 2015 | 448.7K | 49769 |
| Hawkins Electrical Guide v. 04 (of 10) | N. Hawkins | English | July 23, 2015 | 516.9K | 49512 |
| Hawkins Electrical Guide v. 05 (of 10) | N. Hawkins | English | August 11, 2015 | 391.1K | 49675 |
| Hawkins Electrical Guide v. 06 (of 10) | N. Hawkins | English | June 21, 2015 | 403.5K | 49252 |
| Hawkins Electrical Guide v. 07 (of 10) | N. Hawkins | English | June 21, 2015 | 458.6K | 49253 |
| Hawkins Electrical Guide v. 08 (of 10) | N. Hawkins | English | September 28, 2015 | 528.6K | 50068 |
| Hemp Hurds as Paper-Making Material | Lyster H. Dewey and Jason L. Merrill | English | February 25, 2006 | 85.4K | 17855 |
| Henry Ford: Highlights of His Life | Henry Ford Museum and Greenfield Village | English | May 8, 2018 | 49.0K | 57117 |
| Heroes of the Telegraph | John Munro | English | July 1, 1997 | 479.9K | 979 |
| Hertzian Wave Wireless Telegraphy | Sir J. A. Fleming | English | January 8, 2012 | 313.2K | 38526 |
| Het eerste ontwerp voor de bedijking der Zuiderzee, 1848 | Jakob Kloppenburg | Dutch | June 9, 2013 | 349.1K | 42903 |
| Het Haarlemmer-Meer-Boek | Jan Adriaansz Leeghwater | Dutch | September 12, 2009 | 333.2K | 29967 |
| Highway Transport Commitee Council of National Defence, Bulletin 1 | US Government | English | July 20, 2006 | 36.5K | 18878 |
| Highways and Highway Transportation | George R. Chatburn | English | October 6, 2021 | 1.0M | 66482 |
| Histoire des nombres et de la numération mécanique | Jacomy-Régnier | French | January 30, 2009 | 161.0K | 27936 |
| Histoire du Canal de Suez | Ferdinand de Lesseps | French | April 17, 2021 | 100.5K | 65092 |
| History of electric light | Henry Schroeder | English | June 16, 2022 | 183.7K | 68326 |
| History of merchant shipping and ancient commerce, Volume 4 (of 4) | W. S. Lindsay | English | September 8, 2024 | 1.4M | 74393 |
| History of Sanitation | J. J. Cosgrove | English | February 21, 2015 | 207.4K | 48329 |
| History of Steam on the Erie Canal | Anonymous | English | December 28, 2006 | 69.7K | 20209 |
| History of the Confederate Powder Works | George Washington Rains | English | February 7, 2008 | 82.1K | 24537 |
| History of the Royal Sappers and Miners, Volume 1 (of 2) | T. W. J. Connolly | English | October 19, 2017 | 1.2M | 55776 |
| History of the Royal Sappers and Miners, Volume 2 (of 2) | T. W. J. Connolly | English | April 12, 2019 | 1.4M | 59260 |
| History of the Transformer | Friedrich Uppenborn | English | January 13, 2018 | 92.4K | 56365 |
| History of the Water Supply of the World | Thomas J. Bell | English | August 24, 2021 | 371.1K | 66130 |
| Hitchhiker's Guide to the Internet | Ed Krol | English | September 1, 1992 | 69.0K | 39 |
| Hoisting Appliances | — | English | April 15, 2022 | 152.5K | 67844 |
| Home-made Electrical Apparatus | — | English | November 24, 2020 | 327.1K | 63878 |
| Home-made Toy Motors | — | English | December 14, 2020 | 125.7K | 64046 |
| HomeBrew HomePages Put YOU on the World Wide Web | Anonymous | English | July 1, 1995 | 20.2K | 303 |
| Hosiery manufacture | M.A. William Davis | English | April 24, 2016 | 270.9K | 51850 |
| How it flies | Richard Ferris | English | August 5, 2017 | 445.6K | 55268 |
| How it Works | Archibald Williams | English | April 10, 2009 | 452.7K | 28553 |
| How the shortage of skilled mechanics is being overcome by training the unskilled | United States. Council of National Defense. Committee on Labor. Section on Industrial Training for the War Emergency | English | July 5, 2023 | 155.7K | 71125 |
| How to become an engineer | Frank W. Doughty | English | January 6, 2014 | 126.6K | 44604 |
| How to become an inventor | Aaron A. Warford | English | February 7, 2024 | 174.8K | 72892 |
| How To Build A 20-Foot Bi-Plane Glider | — | English | August 29, 2020 | 77.6K | 63077 |
| How to build a house | Eugène-Emmanuel Viollet-le-Duc | English | September 17, 2023 | 427.1K | 71669 |
| How to get an air job | Jack Byrne | English | August 1, 2023 | 29.2K | 71315 |
| How to Install Electric Bells, Annunciators, and Alarms. | Norman H. Schneider | English | June 25, 2018 | 103.2K | 57391 |
| How to Make Electrical Machines | R. A. R. Bennett | English | December 19, 2013 | 148.5K | 44462 |
| How Two Boys Made Their Own Electrical Apparatus | Thomas M. St. John | English | March 15, 2009 | 252.8K | 28335 |
| IBM 1401 Programming Systems | Anonymous | English | December 9, 2008 | 28.3K | 27468 |
| IBM System 360 RPG Debugging Template and Keypunch Card | Anonymous | English | September 22, 2011 | 29.5K | 37504 |
| Il nuovo lume delle gioie | Pietro Caliari | Italian | January 29, 2017 | 102.9K | 54070 |
| Illustrated Catalogue of Cotton Machinery | Howard & Bullough American Machine Company | English | December 14, 2011 | 144.3K | 38301 |
| Illustrated Catalogue of Locomotives; Baldwin Locomotive Works | Baldwin Locomotive Works | English | April 1, 2012 | 233.1K | 39329 |
| Illustrations of the Croton Aqueduct | F. B. Tower | English | November 1, 2021 | 285.1K | 66640 |
| Implement sheds | K. J. T. Ekblaw | English | April 2, 2016 | 50.6K | 51639 |
| Improvement in Fire-Arms and in the Apparatus Used Therewith | Samuel Colt | English | July 27, 2015 | 43.3K | 49532 |
| India and Indian Engineering. | J. G. Medley | English | December 24, 2017 | 211.0K | 56245 |
| Induction Coils, How to Make, Use, and Repair Them. | H. S. Norrie | English | February 22, 2017 | 288.6K | 54221 |
| Industrial Arts Design | William H. Varnum | English | March 12, 2013 | 352.3K | 42317 |
| Installation and Operation Instructions For Custom Mark III CP Series Oil Fired Unit | Anonymous | English | February 25, 2009 | 35.2K | 28166 |
| Instruction book on ring spinning | Francis L. Lincoln | English | August 13, 2010 | 41.5K | 33424 |
| Instruction for Using a Slide Rule | W. Stanley | English | December 29, 2006 | 45.7K | 20214 |
| Instructions for the Management of Harvey's Sea Torpedo | Frederick Harvey | English | April 15, 2022 | 67.7K | 67838 |
| Instructions on Modern American Bridge Building | G. B. N. Tower | English | February 2, 2005 | 89.5K | 14873 |
| International Bridge Authority, Sault Ste. Marie | Anonymous | English | May 17, 2020 | 26.9K | 62156 |
| Introduction of the Locomotive Safety Truck | John H. White | English | May 12, 2008 | 53.7K | 25454 |
| Invention and Discovery: Curious Facts and Characteristic Sketches | Anonymous | English | August 21, 2014 | 332.1K | 46644 |
| Invention: The Master-key to Progress | Bradley A. Fiske | English | October 17, 2013 | 640.4K | 43965 |
| Inventions in the century | William H. Doolittle | English | July 18, 2011 | 903.1K | 36776 |
| Inventions of the Great War | A. Russell Bond | English | April 3, 2014 | 402.4K | 45269 |
| Inventors | Philip Gengembre Hubert | English | February 6, 2012 | 397.8K | 38782 |
| Inventors & Inventions | Henry Robinson | English | August 1, 2014 | 98.3K | 46472 |
| Inventors at Work, with Chapters on Discovery | George Iles | English | March 10, 2015 | 1019.2K | 48454 |
| Irrigation works | E. S. Bellasis | English | December 3, 2017 | 345.0K | 56113 |
| Is a Ship Canal Practicable? | S. T. Abert | English | February 21, 2020 | 259.2K | 61473 |
| Jacquard Machines: Instruction Paper | H. William Nelson | English | November 22, 2015 | 63.9K | 50532 |
| Jacquard Weaving and Designing | T. F. Bell | English | October 19, 2016 | 538.0K | 53318 |
| James B. Eads | Louis How | English | July 14, 2008 | 142.1K | 26052 |
| James Nasmyth, Engineer: An Autobiography | James Nasmyth | English | March 1, 1996 | 859.3K | 476 |
| James Watt | Andrew Carnegie | English | July 26, 2008 | 349.7K | 26131 |
| James Watt und die Erfindung der Dampfmaschine | Georg Biedenkapp | German | July 3, 2016 | 228.9K | 52492 |
| Jane's All the World's Aircraft. 1913 | — | English | January 2, 2011 | 726.7K | 34815 |
| John Deere's Steel Plow | Edward C. Kendall | English | December 4, 2010 | 53.7K | 34562 |
| Joseph Pennell's pictures of the Panama Canal | Joseph Pennell | English | May 10, 2015 | 59.3K | 48924 |
| Karte und Kroki | Hans Wolff | German | November 14, 2015 | 146.1K | 50456 |
| Keely and His Discoveries: Aerial Navigation | Mrs. Bloomfield H. Moore | English | January 7, 2018 | 857.0K | 56332 |
| Kinematics of Mechanisms from the Time of Watt | Eugene S. Ferguson | English | October 31, 2008 | 153.2K | 27106 |
| L'A. B. C. de l'aviation: Biplans et monoplans | Louis Gastine | French | December 14, 2010 | 439.6K | 34633 |
| L'ebook a 40 ans (1971-2011) | Marie Lebert | French | August 6, 2011 | 381.9K | 36987 |
| L'Illustration, No. 3236, 4 Mars 1905 | Various | French | October 23, 2010 | 89.0K | 34119 |
| L'isthme de Panama | Michel Chevalier | French | September 3, 2008 | 300.3K | 26515 |
| La maniere d'amolir les os, et de faire cuire toutes sortes de viandes en fort peu de temps, & à peu de frais. | Denis Papin | French | October 1, 2016 | 144.5K | 53183 |
| La Navigation Aérienne L'aviation Et La Direction Des Aérostats Dans Les Temps Anciens Et Modernes | Gaston Tissandier | French | March 24, 2009 | 467.9K | 28397 |
| La Vettura Automobile: sue parti - suo funzionamento | Alamanno De Maria | Italian | October 29, 2013 | 266.3K | 44067 |
| La web, una enciclopedia multilingüe | Marie Lebert | Spanish | February 5, 2013 | 165.2K | 42023 |
| Laboratory Manual of Glass-Blowing | Francis C. Frary | English | September 22, 2009 | 117.1K | 30066 |
| Langley Memoir on Mechanical Flight, Parts I and II | S. P. Langley | English | January 17, 2015 | 1.1M | 47981 |
| Lasers | Hal Hellman | English | June 4, 2021 | 110.1K | 65512 |
| Le Circuit de l'Est [programme] (French) | — | English | — | 55.4K | 12247 |
| Le Dictionnaire du NEF | Marie Lebert | French | October 26, 2008 | 677.0K | 27043 |
| Le Projet Gutenberg (1971-2005) | Marie Lebert | French | October 26, 2008 | 80.5K | 27040 |
| Le Téléphone, le Microphone et le Phonographe | comte Th. Du Moncel | French | December 20, 2008 | 501.4K | 27574 |
| Lead Smelting and Refining, With Some Notes on Lead Mining | — | English | November 16, 2020 | 643.6K | 63784 |
| Learning to fly in the U.S. Army | E. N. Fales | English | February 8, 2024 | 251.7K | 72902 |
| Learning to Fly: A Practical Manual for Beginners | Claude Grahame-White | English | December 18, 2008 | 213.7K | 27557 |
| Leather: From the Raw Material to the Finished Product | K. J. Adcock | English | August 1, 2013 | 277.9K | 43377 |
| Lecture on Artificial Flight | William G. Krueger | English | November 23, 2011 | 94.1K | 38109 |
| Lectures in Navigation | Ernest Gallaudet Draper | English | December 28, 2008 | 275.5K | 27642 |
| Lectures on Popular and Scientific Subjects | John Sutherland Sinclair, Earl of Caithness | English | March 26, 2005 | 219.6K | 15468 |
| Leonardo da Vinci als Ingenieur und Philosoph | Hermann Grothe | German | April 13, 2019 | 279.1K | 59268 |
| Leonardo da Vinci, Pathfinder of Science | Henry S. Gillette | English | June 2, 2017 | 257.5K | 54827 |
| Les Merveilles de la Locomotion | E. Deharme | French | February 2, 2013 | 404.6K | 41968 |
| Les règles de Cicco Simonetta pour le déchiffrement des écritures secrètes | Cicco Simonetta | French | March 1, 2009 | 46.7K | 28227 |
| Lessons in Wireless Telegraphy | — | English | September 29, 2020 | 136.1K | 63345 |
| Letters of a Radio-Engineer to His Son | John Mills | English | December 16, 2009 | 359.9K | 30688 |
| Lichtbild- und Kino-Technik | Franz Paul Liesegang | German | July 17, 2015 | 173.8K | 49464 |
| Life of Richard Trevithick, with an Account of His Inventions. Volume 2 (of 2) | Francis Trevithick | English | August 19, 2014 | 801.4K | 46634 |
| Life of Robert Stevenson, Civil Engineer | David Stevenson | English | September 21, 2017 | 517.4K | 55596 |
| Light and Colour Theories, and their relation to light and colour standardization | Joseph W. Lovibond | English | June 15, 2018 | 155.5K | 57335 |
| Lighthouses and Lightships | W. H. Davenport Adams | English | September 15, 2018 | 480.3K | 57900 |
| Lightning Conductors: Their History, Nature, and Mode of Application | F.C.S. Richard Anderson | English | April 19, 2017 | 618.1K | 54576 |
| Lightning Rod Conference | — | English | November 28, 2018 | 867.6K | 58367 |
| Lightning, Thunder and Lightning Conductors | Gerald Molloy | English | September 15, 2022 | 180.0K | 68994 |
| Lightships and Lighthouses | Frederick Arthur Ambrose Talbot | English | August 16, 2016 | 710.8K | 52817 |
| Linotype Manual | Various | English | August 10, 2015 | 73.9K | 49667 |
| Linotype mechanism | Alvin Garfield Swank | English | February 7, 2023 | 329.4K | 69975 |
| Lippincott's Magazine of Popular Literature and Science, Volume 11, No. 22, January, 1873 | — | English | — | 409.1K | 14327 |
| Little Masterpieces of Science: Invention and Discovery | — | English | June 25, 2009 | 263.0K | 29241 |
| Lives of Boulton and Watt. Principally from the Original Soho Mss. | Samuel Smiles | English | May 15, 2016 | 1.1M | 52069 |
| Lives of the Engineers | Samuel Smiles | English | January 5, 2009 | 821.9K | 27710 |
| Locomotive Engine Running and Management | Angus Sinclair | English | July 11, 2020 | 616.3K | 62609 |
| LRL Accelerators, The 184-Inch Synchrocyclotron | Lawrence Radiation Laboratory | English | August 10, 2010 | 52.2K | 33397 |
| Machines at Work | Mary Elting | English | September 3, 2017 | 82.3K | 55482 |
| Makers of Many Things | Eva March Tappan | English | April 21, 2009 | 148.3K | 28569 |
| Manual for submarine mining | United States. War Department | English | May 26, 2024 | 260.0K | 73701 |
| Manuel complet des fabricans de chapeaux en tous genres | Jean-S�bastien-Eug�ne Julia de Fontenelle | French | July 11, 2006 | 483.7K | 18806 |
| Manuel da Maya e os engenheiros militares portugueses no Terramoto de 1755 | Crist�v�o Ayres | Portuguese | August 3, 2006 | 129.4K | 18982 |
| Manufacturing Cost Data on Artificial Ice | Otto Luhr | English | July 11, 2009 | 43.4K | 29375 |
| Mariner Mission to Venus | Jet Propulsion Laboratory | English | April 21, 2017 | 229.1K | 54585 |
| Marvel Carbureter and Heat Control | Anonymous | English | November 20, 2008 | 41.9K | 27298 |
| Marvels of Modern Science | Paul Severing | English | July 1, 2004 | 281.3K | 6139 |
| Marvels of Scientific Invention | Thomas W. Corbin | English | November 18, 2011 | 496.3K | 38045 |
| Masters of space - Morse and the telegraph; Thompson and the cable; Bell and the telephone; Marconi and the wireless telegraph; Carty and the wireless telephone | — | English | — | 307.3K | 12375 |
| Material Classification | — | English | May 16, 2018 | 319.2K | 57169 |
| Maxims and Instructions for the Boiler Room | N. Hawkins | English | September 24, 2016 | 662.0K | 53139 |
| Measuring Tools | Unknown | English | August 1, 2013 | 105.7K | 43375 |
| Mechanical Devices in the Home | Edith Allen | English | September 10, 2014 | 321.5K | 46836 |
| Mechanical Drawing Self-Taught | Joshua Rose | English | November 4, 2007 | 417.4K | 23319 |
| Mechanics of the Household | E. S. Keene | English | January 4, 2016 | 791.0K | 50846 |
| Mechanics: The Science of Machinery | A. Russell Bond | English | July 15, 2015 | 567.5K | 49445 |
| Men of Invention and Industry | Samuel Smiles | English | November 1, 1996 | 688.2K | 725 |
| Metal Spinning | C. Tuells | English | June 25, 2015 | 109.6K | 49275 |
| Metropolitan Subway and Elevated Systems | General Electric Company | English | January 18, 2017 | 59.3K | 54009 |
| Microscopes and Accessory Apparatus: Catalogue No. 40 | Ernst Leitz | English | April 12, 2011 | 154.0K | 35842 |
| Milestones in the Mighty Age of Steam: The Grasshopper and the Corliss | Anonymous | English | May 5, 2021 | 64.4K | 65257 |
| Mine Pumping in Agricola's Time and Later | Robert P. Multhauf | English | January 20, 2010 | 43.2K | 31024 |
| Minimum Gauge Railways | bart. Sir Arthur Percival Heywood | English | December 3, 2013 | 161.9K | 44341 |
| Mission Furniture: How to Make It, Part 1 | H. H. Windsor | English | December 8, 2007 | 124.5K | 23770 |
| Mission Furniture: How to Make It, Part 3 | H. H. Windsor | English | November 30, 2007 | 122.7K | 23666 |
| Model aeroplanes | F. J. Camm | English | May 17, 2022 | 184.2K | 68100 |
| Model Flying Machines | — | English | January 14, 2021 | 131.9K | 64296 |
| Modern Copper Smelting | Donald M. Levy | English | October 23, 2019 | 685.5K | 59328 |
| Modern Cotton Spinning Machinery, Its Principles and Construction | Joseph Nasmith | English | July 26, 2018 | 788.2K | 57586 |
| Modern Machine-Shop Practice, Volumes I and II | Joshua Rose | English | March 21, 2012 | 4.6M | 39225 |
| Modern shipbuilding and the men engaged in it | David Pollock | English | May 19, 2024 | 631.3K | 73651 |
| Modern ships of war | Sir Edward J. Reed | English | June 22, 2024 | 695.2K | 73887 |
| Monthly supplement of the penny magazine of the Society for the Diffusion of Useful Knowledge, issue 21, June 30 to July 31, 1832 | — | English | October 7, 2025 | 74.9K | 77005 |
| Motion Picture Operation, Stage Electrics and Illusions | Henry Charles Horstmann | English | March 27, 2014 | 564.1K | 45231 |
| Motor Transports in War | Horace Wyatt | English | January 6, 2018 | 202.0K | 56323 |
| Motor Truck Logging Methods | Frederick Malcolm Knapp | English | September 8, 2011 | 122.0K | 37359 |
| Motor-car principles; the gasoline automobile | Roger B. Whitman | English | March 3, 2023 | 391.6K | 70194 |
| Motorcycle, Solo (Harley-Davidson Model WLA) | United States. War Department | English | January 27, 2016 | 360.4K | 51058 |
| Motors | James Slough Zerbe | English | March 19, 2013 | 296.9K | 42369 |
| Moving Pictures: How They Are Made and Worked | Frederick Arthur Ambrose Talbot | English | May 2, 2022 | 728.2K | 67972 |
| Moxon's mechanick exercises, volume 1 (of 2) | Joseph Moxon | English | November 24, 2023 | 333.8K | 72217 |
| My Airships; The Story of My Life | Alberto Santos-Dumont | English | March 16, 2013 | 264.6K | 42344 |
| My Life and Work | Henry Ford | English | January 1, 2005 | 538.2K | 7213 |
| Natural & Artificial Sewage Treatment | Alfred Stowell Jones | English | February 24, 2018 | 208.4K | 56637 |
| Natural Stability and the Parachute Principle in Aeroplanes | W. LeMaitre | English | February 4, 2013 | 59.0K | 42018 |
| Nature's Teachings: Human Invention Anticipated by Nature | J. G. Wood | English | October 17, 2016 | 1021.3K | 53300 |
| Nautical Charts | G. R. Putnam | English | November 13, 2013 | 265.4K | 44175 |
| New Edition of Hints on Silver-Glass Reflecting Telescopes Manufactured by Mr. G. Calver, F.R.A.S. | George Calver | English | November 10, 2016 | 199.7K | 53494 |
| Newark College of Engineering Bulletin, v. 11, No. 4, December 15, 1938 | — | English | March 24, 2022 | 206.0K | 67696 |
| Nitro-Explosives: A Practical Treatise | P. Gerald Sanford | English | March 10, 2005 | 596.0K | 15308 |
| Non-technical chats on iron and steel, and their application to modern industry | La Verne W. Spring | English | March 3, 2024 | 505.7K | 73090 |
| Notes Upon Indigo | John L. Hayes | English | May 3, 2020 | 193.8K | 62008 |
| Nouveau moyen de pr�parer la couche sensible des plaques destin�es � recevoir les images photographiques | Louis-Jacques-Mand� Daguerre | French | July 11, 2005 | 35.5K | 16260 |
| NREN for All: Insurmountable Opportunity | Jean Armour Polly | English | March 1, 1993 | 47.4K | 56 |
| O odkryciach i wynalazkach | Bolesław Prus | Polish | November 5, 2009 | 61.9K | 30407 |
| Obed Hussey | Various | English | October 15, 2006 | 314.0K | 19547 |
| Observations on the Automaton Chess Player Now Exhibited in London, at 4 Spring Gardens | Oxford graduate | English | October 4, 2019 | 42.5K | 60420 |
| Ocean Steam Navigation and the Ocean Post | Thomas Rainey | English | April 19, 2008 | 532.9K | 25104 |
| Ocean Steamships | French Ensor Chadwick | English | February 8, 2017 | 529.3K | 54136 |
| Of Yankee granite | Edward Herbert Cameron | English | October 2, 2023 | 83.2K | 71777 |
| Old-Time Nautical Instruments | John Robinson | English | November 17, 2013 | 45.5K | 44206 |
| Omhoog in het luchtruim! Praatje over het luchtvaartvraagstuk (Dutch) | — | English | — | 52.1K | 14178 |
| Omnibuses and cabs | Henry Charles Moore | English | July 13, 2024 | 325.5K | 74033 |
| On Laboratory Arts | Richard Threlfall | English | September 27, 2007 | 537.3K | 22784 |
| On Naval Timber and Arboriculture | Patrick Matthew | English | December 6, 2016 | 540.0K | 53678 |
| On the Construction of a Silvered Glass Telescope | Henry Draper | English | November 17, 2016 | 195.6K | 53542 |
| On the Development and Distribution of Primitive Locks and Keys | Augustus Henry Lane-Fox Pitt-Rivers | English | October 25, 2013 | 131.0K | 44022 |
| On the Economy of Machinery and Manufactures | Charles Babbage | English | July 1, 2003 | 630.3K | 4238 |
| On the Origin of Clockwork, Perpetual Motion Devices, and the Compass | Derek J. de Solla Price | English | September 16, 2009 | 121.7K | 30001 |
| On-Line Data-Acquisition Systems in Nuclear Physics, 1969 | National Research Council . Ad Hoc Panel on On-line Computers in Nuclear Research | English | April 29, 2013 | 258.0K | 42613 |
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| Opportunities in Aviation | Arthur Sweetser | English | November 21, 2007 | 153.6K | 23581 |
| Opportunities in Engineering | Charles M. Horton | English | February 24, 2008 | 123.1K | 24681 |
| Optical Projection. Part 1: The Projection of Lantern Slides | Lewis Wright | English | October 31, 2010 | 163.9K | 33899 |
| Origin of modern calculating machines | J. A. V. Turck | English | November 19, 2022 | 247.3K | 69386 |
| Outspinning the Spider: The Story of Wire and Wire Rope | John Kimberly Mumford | English | July 22, 2014 | 152.8K | 46376 |
| Oxy-Acetylene Welding and Cutting | Harold P. Manly | English | April 1, 2005 | 307.9K | 7969 |
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| Photogravure | Henry R. Blaney | English | June 17, 2011 | 132.7K | 36446 |
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| Practical Hand Book of Gas, Oil and Steam Engines | John B. Rathbun | English | March 18, 2018 | 738.8K | 56776 |
| Practical hints to builders and those contemplating building | National Sheet Metal Roofing Co. | English | June 10, 2022 | 173.4K | 68285 |
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| Practical Mechanics for Boys | James Slough Zerbe | English | August 11, 2007 | 291.0K | 22298 |
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| Practical Organ Building | W. E. Dickson | English | May 28, 2020 | 261.2K | 62257 |
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| Precision locating and dividing methods | Anonymous | English | September 28, 2022 | 108.8K | 69061 |
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| Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) | Digital Equipment Corporation | English | July 20, 2009 | 85.7K | 29461 |
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| Principles and Practice of Fur Dressing and Fur Dyeing | William E. Austin | English | January 28, 2013 | 355.8K | 41938 |
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| Printing Telegraphy... A New Era Begins | Edward E. Kleinschmidt | English | November 9, 2016 | 137.9K | 53481 |
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| Profits from scrap | Chicago American Bureau of Engineering | English | August 8, 2016 | 67.4K | 52754 |
| Project Gutenberg -10K- DVD | — | English | — | 5.4K | 10802 |
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| Pulp and Paper Magazine, Vol. XIII, No. 20, October 15, 1916 | Various | English | August 29, 2016 | 139.4K | 52931 |
| Pumps and Hydraulics, Part 1 (of 2) | N. Hawkins | English | January 8, 2018 | 671.9K | 56339 |
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| Pyrometry: A Practical Treatise on the Measurement of High Temperatures | Charles R. Darling | English | January 10, 2018 | 321.3K | 56353 |
| Pyrotechnics: The History and Art of Firework Making | Alan St. H. Brock | English | March 25, 2021 | 369.9K | 64922 |
| Pyrotechny | Practicus | English | May 6, 2025 | 378.6K | 76038 |
| Quo vadimus? | E. E. Fournier d'Albe | English | May 1, 2024 | 92.4K | 73514 |
| Radio Boys Cronies; Or, Bill Brown's Radio | — | English | — | 193.1K | 11861 |
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| Railroad Accidents, Their Cause and Prevention | R. C. Richards | English | February 1, 2012 | 174.1K | 38731 |
| Railway Adventures and Anecdotes: Extending over More Than Fifty Years | — | English | February 25, 2010 | 667.5K | 31395 |
| Railway Construction | William Hemingway Mills | English | December 15, 2015 | 626.2K | 50696 |
| Rambles on Railways | Sir Cusack P. Roney | English | May 27, 2015 | 1.1M | 49061 |
| Rat Proofing Buildings and Premises | James Silver | English | July 10, 2020 | 83.0K | 62608 |
| Records of a Family of Engineers | Robert Louis Stevenson | English | June 1, 1995 | 400.7K | 280 |
| Records of Steam Boiler Explosions | Edward Bindon Marten | English | December 23, 2014 | 329.1K | 47762 |
| Refraction and muscular imbalance, as simplified through the use of the ski-optometer | Daniel Woolf | English | August 29, 2023 | 167.7K | 71517 |
| Remarks on a Pamphlet Lately published by the Rev. Mr. Maskelyne, Under the Authority of the Board of Longitude | John Harrison | English | September 5, 2011 | 70.1K | 37321 |
| Remarks on the Present System of Road Making | John Loudon McAdam | English | April 7, 2021 | 389.8K | 65022 |
| Remarks on the Proposed Railway Between Birmingham and London | Anonymous | English | February 17, 2017 | 71.1K | 54179 |
| Report of the Hoosac Tunnel and Troy and Greenfield Railroad, by the Joint Standing Committee of 1866. | Tappan Wentworth | English | August 6, 2012 | 246.7K | 40427 |
| Report of the Knaresbrough Rail-way Committee | England) Knaresbrough Rail-Way Committee (Knaresborough | English | June 28, 2007 | 80.4K | 21956 |
| Report of the Railway Department of the Board of Trade on the | Samuel Laing | English | January 16, 2007 | 68.1K | 20388 |
| Report of the Several Works Connected with the Draining, Paving & Lighting the Parish of Saint Mary Abbotts, Kensington, 1856 | James Broadbridge | English | January 29, 2013 | 36.5K | 41946 |
| Report on the Department of Ports and Harbours for the Year 1890-91 | Australia. Queensland. Department of Ports and Harbours | English | January 27, 2008 | 73.3K | 24442 |
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| Report on the Plans of the Various Railways before the Examiners of the House of Commons, 1864, so far as relates to the Parish of Kensington | James Broadbridge | English | December 26, 2013 | 34.4K | 44516 |
| River and Canal Engineering, the characteristics of open flowing streams, and the principles and methods to be followed in dealing with them. | E. S. Bellasis | English | April 3, 2018 | 350.1K | 56909 |
| Rock Blasting | George G. André | English | July 5, 2017 | 291.9K | 55051 |
| Rockets, Missiles, and Spacecraft of the National Air and Space Museum, Smithsonian Institution | Lynne C. Murphy | English | June 30, 2018 | 153.4K | 57421 |
| Rough and Tumble Engineering | — | English | — | 198.3K | 11164 |
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| Rudimentary Treatise on the Construction of Locks | A. C. Hobbs | English | September 5, 2020 | 432.8K | 63128 |
| Rules and Practice for Adjusting Watches | Walter J. Kleinlein | English | December 19, 2011 | 190.5K | 38340 |
| Samuel F. B. Morse, His Letters and Journals | — | English | — | 971.4K | 11018 |
| Satellite Communications Physics | — | English | August 9, 2020 | 191.6K | 62886 |
| Scaffolding | A. G. H. Thatcher | English | November 2, 2023 | 258.5K | 72009 |
| Scamping Tricks and Odd Knowledge Occasionally Practised upon Public Works | John Newman | English | January 13, 2011 | 363.8K | 34942 |
| Scenic Mount Lowe and Its Wonderful Railway | George Wharton James | English | April 22, 2013 | 130.9K | 42579 |
| Schöpfungen der Ingenieurtechnik der Neuzeit | Max Geitel | German | October 31, 2014 | 244.6K | 47251 |
| Scientific American Architects and Builders Edition, No. 26, Dec., 1887 | Various | English | January 14, 2016 | 379.2K | 50927 |
| Scientific American magazine Vol 2. No. 3 Oct 10 1846 | Various | English | July 14, 2009 | 138.4K | 29411 |
| Scientific American magazine, Vol. 2 Issue 1 | Various | English | January 21, 2009 | 150.8K | 27867 |
| Scientific American Supplement No. 819 | Various | English | February 9, 2005 | 239.8K | 14990 |
| Scientific American Supplement No. 822 | Various | English | February 9, 2005 | 274.9K | 14989 |
| Scientific American Supplement, No. 1082, September 26, 1896 | Various | English | January 15, 2008 | 240.1K | 24323 |
| Scientific American Supplement, No. 1178, June 25, 1898 | Various | English | April 27, 2006 | 220.6K | 18265 |
| Scientific American Supplement, No. 275, April 9, 1881 | Various | English | May 1, 2005 | 294.1K | 8195 |
| Scientific American Supplement, No. 286, June 25, 1881 | Various | English | June 1, 2005 | 202.5K | 8297 |
| Scientific American Supplement, No. 288, July 9, 1881 | Various | English | June 1, 2005 | 281.4K | 8391 |
| Scientific American Supplement, No. 299, September 24, 1881 | Various | English | July 1, 2005 | 261.9K | 8408 |
| Scientific American Supplement, No. 303, October 22, 1881 | Various | English | June 1, 2005 | 251.8K | 8296 |
| Scientific American Supplement, No. 312, December 24, 1881 | Various | English | February 22, 2006 | 227.2K | 17817 |
| Scientific American Supplement, No. 315, January 14, 1882 | Various | English | May 8, 2006 | 241.1K | 18345 |
| Scientific American Supplement, No. 324, March 18, 1882 | Various | English | July 1, 2005 | 259.7K | 8483 |
| Scientific American Supplement, No. 344, August 5, 1882 | Various | English | August 1, 2005 | 267.8K | 8717 |
| Scientific American Supplement, No. 358, November 11, 1882 | Various | English | July 1, 2005 | 248.9K | 8504 |
| Scientific American Supplement, No. 360, November 25, 1882 | Various | English | July 1, 2005 | 250.2K | 8559 |
| Scientific American Supplement, No. 362, December 9, 1882 | Various | English | August 1, 2005 | 251.0K | 8687 |
| Scientific American Supplement, No. 363, December 16, 1882 | Various | English | July 1, 2005 | 249.2K | 8452 |
| Scientific American Supplement, No. 365, December 30, 1882 | Various | English | July 6, 2006 | 213.7K | 18763 |
| Scientific American Supplement, No. 384, May 12, 1883 | Various | English | September 1, 2005 | 241.6K | 8862 |
| Scientific American Supplement, No. 385, May 19, 1883 | Various | English | September 1, 2005 | 229.4K | 8950 |
| Scientific American Supplement, No. 392, July 7, 1883 | Various | English | August 1, 2005 | 256.7K | 8742 |
| Scientific American Supplement, No. 401, September 8, 1883 | Various | English | August 1, 2005 | 240.6K | 8718 |
| Scientific American Supplement, No. 415, December 15, 1883 | — | English | — | 204.8K | 11344 |
| Scientific American Supplement, No. 417, December 29, 1883 | Various | English | October 1, 2005 | 187.1K | 9163 |
| Scientific American Supplement, No. 421, January 26, 1884 | Various | English | July 24, 2005 | 205.9K | 16353 |
| Scientific American Supplement, No. 430, March 29, 1884 | Various | English | July 1, 2005 | 235.7K | 8484 |
| Scientific American Supplement, No. 433, April 19, 1884 | Various | English | October 1, 2005 | 229.5K | 9076 |
| Scientific American Supplement, No. 441, June 14, 1884. | Various | English | May 16, 2005 | 260.4K | 15833 |
| Scientific American Supplement, No. 443, June 28, 1884 | Various | English | September 29, 2005 | 189.6K | 16773 |
| Scientific American Supplement, No. 446, July 19, 1884 | — | English | — | 231.8K | 11385 |
| Scientific American Supplement, No. 447, July 26, 1884 | Various | English | November 1, 2005 | 250.6K | 9266 |
| Scientific American Supplement, No. 455, September 20, 1884 | — | English | — | 239.2K | 13962 |
| Scientific American Supplement, No. 458, October 11, 1884 | — | English | — | 257.4K | 11647 |
| Scientific American Supplement, No. 460, October 25, 1884 | — | English | — | 231.0K | 11734 |
| Scientific American Supplement, No. 467, December 13, 1884 | Various | English | August 28, 2014 | 252.8K | 46706 |
| Scientific American Supplement, No. 470, January 3, 1885 | — | English | — | 211.4K | 14041 |
| Scientific American Supplement, No. 481, March 21, 1885 | — | English | — | 226.3K | 11735 |
| Scientific American Supplement, No. 483, April 4, 1885 | — | English | — | 175.2K | 14097 |
| Scientific American Supplement, No. 484, April 11, 1885 | — | English | — | 207.3K | 13939 |
| Scientific American Supplement, No. 488, May 9, 1885 | Various | English | December 30, 2008 | 234.7K | 27662 |
| Scientific American Supplement, No. 492, June 6, 1885 | — | English | — | 220.9K | 12490 |
| Scientific American Supplement, No. 497, July 11, 1885 | Various | English | January 1, 2006 | 234.0K | 9666 |
| Scientific American Supplement, No. 508, September 26, 1885 | Various | English | October 3, 2005 | 239.4K | 16792 |
| Scientific American Supplement, No. 520, December 19, 1885 | — | English | — | 200.8K | 13401 |
| Scientific American Supplement, No. 530, February 27, 1886 | — | English | — | 232.7K | 13399 |
| Scientific American Supplement, No. 531, March 6, 1886 | — | English | — | 230.2K | 11383 |
| Scientific American Supplement, No. 561, October 2, 1886 | Various | English | July 27, 2005 | 279.5K | 16360 |
| Scientific American Supplement, No. 586, March 26, 1887 | — | English | — | 222.6K | 11736 |
| Scientific American Supplement, No. 595, May 28, 1887 | — | English | — | 224.6K | 11648 |
| Scientific American Supplement, No. 598, June 18, 1887 | — | English | — | 207.6K | 11662 |
| Scientific American Supplement, No. 601, July 9, 1887 | — | English | — | 214.1K | 11498 |
| Scientific American Supplement, No. 611, September 17, 1887 | Various | English | October 26, 2005 | 251.4K | 16948 |
| Scientific American Supplement, No. 613, October 1, 1887 | Various | English | May 24, 2005 | 258.5K | 15889 |
| Scientific American Supplement, No. 620, November 19,1887 | Various | English | July 24, 2005 | 245.1K | 16354 |
| Scientific American Supplement, No. 623, December 10, 1887 | Various | English | July 12, 2005 | 241.8K | 16270 |
| Scientific American Supplement, No. 633, February 18, 1888 | Various | English | November 27, 2005 | 246.5K | 17167 |
| Scientific American Supplement, No. 643, April 28, 1888 | Various | English | September 7, 2005 | 232.2K | 16671 |
| Scientific American Supplement, No. 647, May 26, 1888 | Various | English | December 31, 2008 | 241.4K | 27667 |
| Scientific American Supplement, No. 648, June 2, 1888. | Various | English | December 24, 2011 | 280.0K | 38403 |
| Scientific American Supplement, No. 664, September 22,1888 | Various | English | January 15, 2008 | 233.2K | 24322 |
| Scientific American Supplement, No. 711, August 17, 1889 | Various | English | October 31, 2005 | 256.9K | 16972 |
| Scientific American Supplement, No. 717, September 28, 1889 | Various | English | February 12, 2006 | 269.7K | 17755 |
| Scientific American Supplement, No. 787, January 31, 1891 | — | English | — | 250.8K | 14009 |
| Scientific American Supplement, No. 794, March 21, 1891 | Various | English | April 25, 2005 | 247.1K | 15708 |
| Scientific American Supplement, No. 795, March 28, 1891 | — | English | — | 218.1K | 13443 |
| Scientific American Supplement, No. 799, April 25, 1891 | — | English | — | 196.8K | 11649 |
| Scientific American Supplement, No. 803, May 23, 1891 | — | English | — | 220.8K | 13358 |
| Scientific American Supplement, No. 810, July 11, 1891 | Various | English | February 14, 2005 | 271.6K | 15050 |
| Scientific American Supplement, No. 821, September 26, 1891 | — | English | — | 269.6K | 13640 |
| Scientific American Supplement, No. 829, November 21, 1891 | Various | English | February 14, 2005 | 238.7K | 15051 |
| Scientific American Supplement, No. 832, December 12, 1891 | Various | English | February 14, 2005 | 248.6K | 15052 |
| Scientific American Supplement, Vol. XV., No. 388, June 9, 1883 | Various | English | March 20, 2005 | 267.0K | 15417 |
| Scientific American, September 29, 1883 Supplement. No. 404 | Various | English | August 25, 2014 | 267.4K | 46684 |
| Scientific American, Vol. XLIII.—No. 1. [New Series.], July 3, 1880 | Various | English | January 3, 2012 | 220.9K | 38482 |
| Scientific American, Vol. XXXIX.—No. 24. [New Series.], December 14, 1878 | Various | English | January 3, 2012 | 280.9K | 38480 |
| Scientific American, Vol. XXXIX.No. 6. [New Series.], August 10, 1878 | Various | English | July 22, 2013 | 285.2K | 43282 |
| Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 | Various | English | January 3, 2012 | 287.7K | 38481 |
| Scientific American, Volume 17, No. 26 December 28, 1867 | Various | English | September 1, 2005 | 274.0K | 8951 |
| Scientific American, Volume 22, No. 1, January 1, 1870 | Various | English | September 1, 2005 | 424.9K | 8952 |
| Scientific American, Volume 40, No. 13, March 29, 1879 | Various | English | July 18, 2006 | 268.3K | 18866 |
| Scientific American, Volume 56, No. 9, February 26, 1887 | Various | English | February 18, 2015 | 266.0K | 48300 |
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| Steam, Steel and Electricity | James W. Steele | English | April 1, 2005 | 325.8K | 7886 |
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| Surveying and Levelling Instruments, Theoretically and Practically Described. | William Ford Stanley | English | November 21, 2020 | 998.4K | 63834 |
| Survival at Altitude for Heavy and Very Heavy Bomber Crews | — | English | November 24, 2021 | 77.1K | 66809 |
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| Synthetic Tannins, Their Synthesis, Industrial Production and Application | Georg Grasser | English | April 1, 2005 | 295.2K | 7981 |
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| Terrestrial and Celestial Globes Volume 2 | Edward Luther Stevenson | English | June 11, 2012 | 667.4K | 39867 |
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| The A B C of Mining: A Handbook for Prospectors | Charles A. Bramble | English | April 1, 2014 | 257.1K | 45287 |
| The Advance of Science in the Last Half-Century | T.H. (Thomas Henry) Huxley | English | March 4, 2005 | 155.9K | 15253 |
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| The Aeroplane Speaks. Fifth Edition | H. Barber | English | June 10, 2007 | 287.0K | 21791 |
| The Alumni Journal of the College of Pharmacy of the City of New York, Vol. II, No. 2, February, 1895 | Various | English | September 4, 2016 | 134.4K | 52977 |
| The American Electro Magnetic Telegraph | Alfred Vail | English | February 29, 2020 | 515.4K | 61533 |
| The American Journal of Photography, Vol. XI, No. 7, July 1890 | Various | English | April 3, 2019 | 116.4K | 59193 |
| The American Printer: A Manual of Typography | Thomas MacKellar | English | March 23, 2018 | 743.5K | 56817 |
| The American Railway: Its Construction, Development, Management, and Appliances | Thomas Curtis Clarke | English | March 18, 2017 | 847.5K | 54383 |
| The American Type of Isthmian Canal | John F. Dryden | English | March 23, 2008 | 135.1K | 24901 |
| The Anatomy of Bridgework | William Henry Thorpe | English | December 6, 2013 | 323.9K | 44371 |
| The Art of Bookbinding: A practical treatise, with plates and diagrams | Joseph William Zaehnsdorf | English | February 14, 2016 | 342.3K | 51213 |
| The art of glass-blowing | T.-P. Danger | English | August 4, 2017 | 199.5K | 55266 |
| The Art of Inventing | Edwin J. Prindle | English | April 30, 2014 | 54.0K | 45541 |
| The art of lead burning | C. H. Fay | English | August 18, 2016 | 156.5K | 52835 |
| The Art of Making Whiskey | Anthony Boucherie | English | May 24, 2007 | 82.4K | 21592 |
| The Art of Paper-Making | Alexander Watt | English | October 15, 2017 | 766.0K | 55757 |
| The Aswân Obelisk | Reginald Engelbach | English | April 20, 2019 | 179.7K | 59320 |
| The Atlantic Monthly, Volume 02, No. 13, November, 1858 | — | English | — | 482.7K | 10867 |
| The Atlantic Telegraph (1865) | Sir William Howard Russell | English | October 5, 2012 | 359.6K | 40948 |
| The Atom and the Ocean | E. W. Seabrook Hull | English | September 11, 2021 | 123.8K | 66268 |
| The Auburndale Watch Company | Edwin A. Battison | English | September 8, 2009 | 82.5K | 29934 |
| The Automatic Toy Works | New York Automatic Toy Works | English | January 7, 2018 | 30.3K | 56336 |
| The automobile owner's guide | Frank B. Scholl | English | November 18, 2022 | 554.9K | 69375 |
| The Automobile Storage Battery: Its Care And Repair | Otto A. Witte | English | August 17, 2009 | 949.6K | 29718 |
| The Bark Canoes and Skin Boats of North America | Tappan Adney | English | January 2, 2016 | 726.5K | 50828 |
| The beginnings of cheap steel | Philip W. Bishop | English | August 8, 2009 | 112.5K | 29633 |
| The Birth and Babyhood of the Telephone | Thomas Augustus Watson | English | April 7, 2017 | 106.9K | 54506 |
| The Blacksmith in Eighteenth-Century Williamsburg | Harold B. Gill | English | November 21, 2018 | 71.5K | 58318 |
| The book of wonders | — | English | April 24, 2025 | 1.4M | 75948 |
| The Boot and Shoe Manufacturers' Assistant and Guide. | — | English | January 3, 2019 | 567.7K | 58605 |
| The Borghesi Astronomical Clock in the Museum of History and Technology | Silvio A. Bedini | English | July 18, 2010 | 158.8K | 33198 |
| The Boy Electrician | — | English | September 15, 2020 | 467.1K | 63207 |
| The Boy Mechanic, Book 2: 1000 Things for Boys to Do | — | English | January 4, 2014 | 1.3M | 44585 |
| The boy mechanic, book 3 | — | English | October 12, 2023 | 1.5M | 71856 |
| The Boy's Book of Industrial Information | Elisha Noyce | English | July 19, 2015 | 449.9K | 49489 |
| The Boy's Book of New Inventions | Harry E. Maule | English | July 9, 2014 | 566.0K | 46232 |
| The Boys' Book of Submarines | A. Frederick Collins | English | September 4, 2015 | 263.1K | 49873 |
| The Bridge-Builders | Rudyard Kipling | English | February 26, 2006 | 88.9K | 2163 |
| The British battle fleet, Vol. 2 (of 2) | Fred T. Jane | English | March 15, 2025 | 410.2K | 75617 |
| The British Journal of Photography, No. 613, Vol. XIX, February 2, 1872 | Various | English | January 17, 2019 | 147.4K | 58708 |
| The BYU Solar Cooker/Cooler | Steven E. Jones | English | June 1, 2004 | 63.7K | 5889 |
| The calculating engine | Charles Babbage | English | July 28, 2023 | 184.2K | 71292 |
| The Century of Inventions of the Marquis of Worcester | Marquis of Edward Somerset Worcester | English | March 24, 2015 | 261.6K | 48575 |
| The Chemistry of Hat Manufacturing | Watson Smith | English | February 10, 2006 | 293.9K | 17740 |
| The Chester and Holyhead Railway and Its Prospects | William Morgan | English | May 17, 2020 | 27.8K | 62157 |
| The Chickamauga Dam and its environs | Robert Sparks Walker | English | August 18, 2023 | 73.0K | 71437 |
| The chocolate-plant (Theobroma cacao) and its products | Anonymous | English | September 10, 2025 | 72.2K | 76852 |
| The Classification of Patents | United States. Patent Office | English | September 20, 2007 | 149.7K | 22685 |
| The colored inventor | Henry E. Baker | English | May 3, 2007 | 57.7K | 21281 |
| The Condition and Tendencies of Technical Education in Germany | Arthur Henry Chamberlain | English | September 12, 2008 | 124.0K | 26595 |
| The construction and maintenance of earth roads | Richard Roswell Lyman | English | September 20, 2022 | 53.4K | 69016 |
| The Country's Need of Greater Railway Facilities and Terminals | James J. Hill | English | December 4, 2014 | 63.2K | 47536 |
| The Crystal Palace | Peter Berlyn | English | November 16, 2013 | 366.3K | 44192 |
| The Curtiss Aviation Book | Glenn Hammond Curtiss | English | October 10, 2021 | 405.0K | 66511 |
| The Daguerreian Journal, Vol. I, No. 8, March 1, 1851 | Various | English | October 10, 2020 | 166.4K | 63427 |
| The Daguerreian Journal, Vol. II, No. 2, June 1, 1851 | Various | English | October 10, 2020 | 168.1K | 63428 |
| The Dawn of Amateur Radio in the U.K. and Greece: A Personal View | Norman F. Joly | English | May 1, 1993 | 205.9K | 66 |
| The Details of the Rocket System | Sir William Congreve | English | August 28, 2018 | 119.0K | 57791 |
| The development of armor-piercing shells (with suggestions for their improvement) | Carlos De Zafra | English | August 25, 2010 | 64.8K | 33535 |
| The Dominion Astrophysical Observatory, Victoria, B.C. | J. S. Plaskett | English | July 4, 2020 | 75.2K | 62557 |
| The Dominion of the Air: The Story of Aerial Navigation | John M. Bacon | English | March 1, 1997 | 538.9K | 861 |
| The Draughtsman's Handbook of Plan and Map Drawing | George G. André | English | June 8, 2018 | 369.2K | 57290 |
| The Dry Collodion Process | Charles A. Long | English | November 20, 2020 | 71.7K | 63814 |
| The Dyeing of Cotton Fabrics: A Practical Handbook for the Dyer and Student | Franklin Beech | English | April 27, 2007 | 685.9K | 21224 |
| The Earliest Electromagnetic Instruments | Robert A. Chipman | English | October 12, 2010 | 81.8K | 34061 |
| The Early History of the Airplane | Orville Wright | English | May 11, 2008 | 100.8K | 25420 |
| The eBook is 40 (1971-2011) | Marie Lebert | English | August 6, 2011 | 240.7K | 36985 |
| The Economy of Workshop Manipulation | John Richards | English | May 9, 2018 | 455.5K | 57120 |
| The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose | Thomas Walter Barber | English | December 1, 2018 | 354.0K | 58391 |
| The Engineering Contributions of Wendel Bollman | Robert M. Vogel | English | October 20, 2010 | 87.4K | 33912 |
| The Evolution of Modern Band Saw Mills for Sawing Logs | D. Clint Prescott | English | October 31, 2017 | 62.0K | 55863 |
| The Evolution of Naval Armament | Frederick Leslie Robertson | English | March 18, 2018 | 753.0K | 56777 |
| The evolution of the oil industry | Victor Ross | English | October 16, 2025 | 241.1K | 77066 |
| The evolution of the steam locomotive (1803 to 1898) | George Augustus Nokes | English | May 2, 2024 | 690.3K | 73518 |
| The Face of the Earth as Seen from the Air | Willis T. Lee | English | May 9, 2020 | 160.0K | 62068 |
| The Fifteen Watt Tungsten Lamp | Clair Elmore Anderson | English | December 2, 2015 | 40.1K | 50588 |
| The filtration of public water-supplies | Allen Hazen | English | September 21, 2022 | 748.7K | 69025 |
| The Fireless Locomotive | Anonymous | English | March 18, 2021 | 33.1K | 64856 |
| The First Airplane Diesel Engine: Packard Model DR-980 of 1928 | Robert B. Meyer | English | January 20, 2010 | 114.0K | 31023 |
| The First Man-Carrying Aeroplane Capable of Sustained Free Flight: Langley's Success as a Pioneer in Aviation | Albert Francis Zahm | English | December 19, 2013 | 38.0K | 44466 |
| The First Quarter-Century of Steam Locomotives in North America | Smith Hempstone Oliver | English | May 4, 2016 | 177.5K | 51976 |
| The Future of Road-making in America | Archer Butler Hulbert | English | September 12, 2010 | 221.7K | 33706 |
| The Gasoline Motor | Harold Whiting Slauson | English | June 10, 2014 | 203.1K | 45932 |
| The Great Thames Barrage | Thomas Walter Barber | English | May 25, 2020 | 61.5K | 62224 |
| The Gunner's Examiner | Harold E. Cloke | English | January 6, 2015 | 273.4K | 47895 |
| The gunsmith's manual | J. Parish Stelle | English | October 21, 2023 | 533.9K | 71928 |
| The Gyroscopic Compass: A Non-Mathematical Treatment | T. W. Chalmers | English | May 22, 2018 | 264.0K | 57200 |
| The hand-book of artillery | Joseph Roberts | English | September 5, 2023 | 290.1K | 71575 |
| The handbook of soap manufacture | W. H. Simmons | English | June 7, 2007 | 460.1K | 21724 |
| The hardwood finisher | — | English | May 5, 2025 | 261.1K | 76021 |
| The History of Coaches | George Athelstane Thrupp | English | June 11, 2015 | 279.1K | 49194 |
| The history of steam navigation | John Kennedy | English | March 1, 2023 | 593.2K | 70176 |
| The History of the Telephone | Herbert Newton Casson | English | February 1, 1997 | 327.9K | 819 |
| The Industrial Canal and Inner Harbor of New Orleans | Thomas Ewing Dabney | English | February 25, 2010 | 138.4K | 31383 |
| The Introduction of Self-Registering Meteorological Instruments | Robert P. Multhauf | English | May 22, 2010 | 71.7K | 32482 |
| The Invention of Lithography | Alois Senefelder | English | October 3, 2012 | 513.9K | 40924 |
| The Invention of Printing. | Theodore Low De Vinne | English | January 25, 2016 | 1.2M | 51034 |
| The Invention of the Sewing Machine | Grace Rogers Cooper | English | June 4, 2010 | 392.1K | 32677 |
| The Invention of the Track Circuit | American Railway Association | English | March 20, 2014 | 175.0K | 45179 |
| The Invention of Typography | Frederick W. Hamilton | English | February 22, 2022 | 123.2K | 67471 |
| The inventions, researches and writings of Nikola Tesla | Thomas Commerford Martin | English | March 26, 2012 | 1005.3K | 39272 |
| The Isthmus of Suez Question | Ferdinand de Lesseps | English | April 17, 2019 | 325.5K | 59295 |
| The Jacquard Machine Analyzed and Explained | E. A. Posselt | English | February 19, 2017 | 285.1K | 54193 |
| The Jargon File, Version 2.9.10, 01 Jul 1992 | — | English | August 1, 1992 | 1.1M | 38 |
| The Journal of Electricity, Power and Gas, Volume XX, No. 18, May 2, 1908 | Various | English | October 30, 2018 | 91.8K | 58196 |
| The Jute Industry: | T. Woodhouse and P. Kilgour | English | May 26, 2004 | 172.8K | 12443 |
| The kaleidoscope | David Brewster | English | September 14, 2024 | 296.0K | 74417 |
| The Library of Work and Play: Working in Metals | Charles Conrad Sleffel | English | February 24, 2014 | 387.3K | 45004 |
| The Life of George Stephenson and of his Son Robert Stephenson | Samuel Smiles | English | July 9, 2014 | 1.1M | 46229 |
| The life of Isambard Kingdom Brunel, Civil Engineer | Isambard Brunel | English | October 28, 2012 | 1.2M | 41210 |
| The Life of Thomas Telford, Civil Engineer | Samuel Smiles | English | June 1, 1997 | 628.2K | 939 |
| The Life, Times, and Scientific Labours of the Second Marquis of Worcester | Henry Dircks | English | May 1, 2016 | 1.1M | 51903 |
| The magic lantern and its management | Thomas Cradock Hepworth | English | April 17, 2025 | 111.0K | 75890 |
| The Making of a Man: Being a Description of Artificial Limbs and How They May Be Adopted by Those Who Have Suffered Loss of Their Natural Limbs | N.Y.) George R. Fuller Co. (Rochester | English | August 1, 2021 | 118.2K | 65975 |
| The Manufacture of Chocolate and other Cacao Preparations | Paul Zipperer | English | September 19, 2017 | 688.2K | 55584 |
| The Manufacture of Paper | R. W. Sindall | English | July 30, 2014 | 489.8K | 46449 |
| The Manufacture of Tomato Products | W. G. Hier | English | May 8, 2021 | 297.5K | 65287 |
| The Mechanical Properties of Wood | — | English | — | 365.4K | 12299 |
| The Memoirs of Charles H. Cramp | Augustus C. Buell | English | May 3, 2018 | 413.1K | 57081 |
| The Mentor: Great American Inventors, Vol. 1, Num. 29, Serial No. 29 | H. Addington Bruce | English | September 6, 2015 | 56.3K | 49893 |
| The Mentor: Reclaiming the Desert, Vol. 6, Num. 17, Serial No. 165, October 15, 1918 | C. J. Blanchard | English | July 16, 2015 | 79.1K | 49454 |
| The Methods of Glass Blowing and of Working Silica in the Oxy-Gas Flame | W. A. Shenstone | English | October 6, 2010 | 186.7K | 33941 |
| The Microscope | Andrew Ross | English | January 31, 2013 | 104.7K | 41958 |
| The Microscope. Its History, Construction, and Application 15th ed. | Jabez Hogg | English | January 25, 2020 | 1.4M | 61233 |
| The Miner's Friend; Or, An Engine to Raise Water by Fire | Thomas Savery | English | September 17, 2014 | 74.0K | 46879 |
| The model village and its cottages | William Alexander Harvey | English | May 4, 2024 | 133.3K | 73532 |
| The Modern Bicycle and Its Accessories | Alex Schwalbach | English | December 9, 2018 | 654.4K | 58444 |
| The Modern Clock | Ward L. Goodrich | English | February 24, 2020 | 829.3K | 61494 |
| The modern packing house | F. W. Wilder | English | April 7, 2024 | 946.1K | 73350 |
| The Modern Railroad | Edward Hungerford | English | July 15, 2012 | 966.8K | 40242 |
| The Municipal and Sanitary Engineer's Handbook | H. Percy Boulnois | English | November 11, 2017 | 828.1K | 55935 |
| The Mysteryes of Nature and Art | John Bate | English | January 1, 2015 | 217.1K | 47837 |
| The New Wonder of the World: Buffalo, the Electric City | A. E. Richmond | English | August 24, 2020 | 105.4K | 63027 |
| The New York Subway | Anonymous | English | January 21, 2006 | 315.7K | 17569 |
| The Notebooks of Leonardo Da Vinci — Complete | da Vinci Leonardo | English | January 1, 2004 | 1.4M | 5000 |
| The Nuclear Ship Savannah | — | English | October 30, 2020 | 55.6K | 63584 |
| The Oak Ridge ALGOL Compiler for the Control Data Corporation 1604 | L. L. Bumgarner | English | November 17, 2015 | 77.6K | 50468 |
| The Online World | Odd De Presno | English | September 1, 1993 | 620.5K | 80 |
| The Palace and Park | Samuel Phillips | English | June 30, 2019 | 1.6M | 59843 |
| The Panama Canal | Frederic J. Haskin | English | January 9, 2013 | 598.1K | 41807 |
| The Panama Canal | Duncan E. McKinlay | English | November 25, 2014 | 88.0K | 47452 |
| The Panama Canal | Harry Clow Boardman | English | November 14, 2017 | 111.9K | 55970 |
| The Panama Canal and Its Makers | Vaughan Cornish | English | October 8, 2011 | 191.4K | 37671 |
| The Panama Canal: A history and description of the enterprise | J. Saxon Mills | English | October 24, 2010 | 380.9K | 34124 |
| The Passaic Flood of 1903 | Marshall Ora Leighton | English | November 20, 2006 | 148.3K | 19878 |
| The Pencil of Nature | William Henry Fox Talbot | English | August 16, 2010 | 75.6K | 33447 |
| The Petrol Engine | Francis John Kean | English | August 21, 2017 | 221.4K | 55403 |
| The Pioneer Steamship Savannah: A Study for a Scale Model | Howard Irving Chapelle | English | May 20, 2008 | 78.1K | 25544 |
| The platinum metals | Arthur Douglas Lumb | English | December 17, 2020 | 173.1K | 64068 |
| The Pneumatic Despatch Tube System of the Batcheller Pneumatic Tube Co. | Birney C. Batcheller | English | December 3, 2020 | 202.5K | 63952 |
| The Popular Science Monthly, October, 1900 | Various | English | November 6, 2014 | 321.8K | 47296 |
| The Popular Science Monthly, September, 1900 | Various | English | November 4, 2014 | 335.5K | 47281 |
| The Practical Values of Space Exploration | Committee on Science and Astronautics | English | November 24, 2006 | 146.5K | 19911 |
| The Preservation of the Exterior of Wooden Buildings | Allerton S. Cushman | English | June 21, 2020 | 42.1K | 62444 |
| The Principles of Leather Manufacture | H. R. Procter | English | July 20, 2018 | 1.1M | 57548 |
| The Problem of Manflight | James Means | English | December 24, 2017 | 46.3K | 56249 |
| The Progress of Invention in the Nineteenth Century. | Edward W. Byrn | English | December 2, 2012 | 891.1K | 41538 |
| The Project Gutenberg RST Manual | — | English | January 1, 2001 | 57.1K | 181 |
| The proposed union of the telegraph and postal systems | Western Union Telegraph Company | English | May 23, 2020 | 378.7K | 62214 |
| The Puering, Bating & Drenching of Skins | Joseph Turney Wood | English | October 26, 2018 | 520.9K | 58168 |
| The Radio Amateur's Hand Book | A. Frederick Collins | English | November 1, 2004 | 412.0K | 6934 |
| The Radio Amateur's Hand Book | A. Frederick Collins | English | November 19, 2004 | 412.0K | 6935 |
| The Railway Conquest of the World | Frederick Arthur Ambrose Talbot | English | December 2, 2021 | 727.4K | 66868 |
| The Railway Library, 1909 | — | English | October 15, 2015 | 1.0M | 50220 |
| The Rare Earths: Their Occurrence, Chemistry, and Technology | Stanley Isaac Levy | English | August 13, 2020 | 750.4K | 62923 |
| The Recent Revolution in Organ Building | George Laing Miller | English | April 22, 2007 | 317.5K | 21204 |
| The Rise of Rail-Power in War and Conquest, 1833-1914 | Edwin A. Pratt | English | March 30, 2013 | 909.2K | 42438 |
| The Road | Hilaire Belloc | English | May 10, 2021 | 288.9K | 65304 |
| The Road and the Roadside | Burton Willis Potter | English | April 25, 2009 | 176.3K | 28607 |
| The Rocket: The Story of the Stephensons, Father and Son | Helen C. Knight | English | October 3, 2015 | 145.1K | 50119 |
| The Romance of Aircraft | Laurence Yard Smith | English | July 8, 2012 | 401.0K | 40170 |
| The Romance of Industry and Invention | — | English | December 17, 2011 | 508.8K | 38329 |
| The Romance of Modern Invention | Archibald Williams | English | October 24, 2012 | 504.2K | 41160 |
| The Romance of Modern Mechanism | Archibald Williams | English | June 25, 2014 | 577.4K | 46094 |
| The romance of the Canadian Pacific Railway | R. G. MacBeth | English | December 19, 2022 | 414.7K | 69588 |
| The Romance of the Reaper | Herbert Newton Casson | English | June 5, 2010 | 223.8K | 32702 |
| The Romance of War Inventions | Thomas W. Corbin | English | November 27, 2010 | 523.0K | 34459 |
| The Rural Motor Express | US Government | English | November 13, 2006 | 34.5K | 19799 |
| The Scholfield Wool-Carding Machines | Grace Rogers Cooper | English | November 3, 2008 | 52.2K | 27137 |
| The Science of Brickmaking | George Frederick Harris | English | October 21, 2019 | 287.2K | 60550 |
| The Secret Guide to Computers | Russ Walter | English | September 1, 1996 | 20.1K | 672 |
| The Sewerage of Sea Coast Towns | Henry Charles Adams | English | April 1, 2005 | 237.2K | 7980 |
| The Silicon Jungle | David H. Rothman | English | March 14, 2017 | 928.2K | 54360 |
| The Silversmith's Handbook | George E. Gee | English | December 30, 2014 | 334.4K | 47816 |
| The slide rule | Charles N. Pickworth | English | April 18, 2025 | 336.6K | 75904 |
| The slide valve, simply explained | William John Tennant | English | July 16, 2025 | 94.3K | 76510 |
| The Solution of the Pyramid Problem; or, Pyramid Discoveries | Robert Ballard | English | June 26, 2012 | 156.1K | 40091 |
| The Sperry Gyro-Compass | Sperry Gyroscope Company | English | May 12, 2016 | 74.0K | 52053 |
| The Standard Electrical Dictionary | T. O'Conor Sloane | English | September 5, 2008 | 1.3M | 26535 |
| The Steam Engine Explained and Illustrated (Seventh Edition) | Dionysius Lardner | English | April 26, 2013 | 1.1M | 42602 |
| The Steam Engine Familiarly Explained and Illustrated | Dionysius Lardner | English | August 26, 2017 | 643.3K | 55428 |
| The Steam Fire Engine and the Old-time Fire Bell | Anonymous | English | March 15, 2021 | 66.6K | 64832 |
| The stereoscope | David Brewster | English | August 24, 2023 | 373.1K | 71483 |
| The Stoker's Catechism | W. J. Connor | English | January 27, 2008 | 94.8K | 24441 |
| The Story of American Aviation | Jim Ray | English | October 5, 2018 | 244.8K | 58033 |
| The Story of Electricity | John Munro | English | December 1, 2003 | 310.2K | 4710 |
| The Story of Great Inventions | Elmer Ellsworth Burns | English | October 3, 2011 | 314.4K | 37609 |
| The story of John Smeaton and the Eddystone lighthouse | Anonymous | English | August 30, 2025 | 152.0K | 76767 |
| The story of paper-making | Frank Osgood Butler | English | November 21, 2018 | 190.8K | 58319 |
| The story of rope | — | English | October 5, 2023 | 104.1K | 71807 |
| The Story of the Airship (Non-rigid) | Hugh Allen | English | March 25, 2016 | 183.1K | 51547 |
| The Story of the Atlantic Cable | Sir Charles Bright | English | June 26, 2014 | 330.4K | 46105 |
| The Story of the Atlantic Telegraph | Henry M. Field | English | December 27, 2010 | 654.4K | 34765 |
| The story of the invention of steel pens | Henry Bore | English | February 1, 2006 | 112.5K | 9954 |
| The Story of the Pullman Car | Joseph Husband | English | June 28, 2014 | 193.1K | 46122 |
| The Story of the Submarine | Farnham Bishop | English | November 30, 2015 | 307.9K | 50582 |
| The Story of the Typewriter, 1873-1923 | — | English | November 26, 2019 | 175.9K | 60794 |
| The Submarine in War and Peace: Its Development and its Possibilities | Simon Lake | English | July 23, 2014 | 548.6K | 46382 |
| The Tank Corps | Clough Williams-Ellis | English | August 8, 2020 | 699.0K | 62881 |
| The telephone | Alexander Graham Bell | English | October 21, 2017 | 79.9K | 55787 |
| The Telephone | A. E. Dolbear | English | July 14, 2010 | 146.0K | 33154 |
| The Telephone in America: Bell Telephone System | Anonymous | English | January 27, 2020 | 80.4K | 61259 |
| The telephone, the microphone & the phonograph | comte Th. Du Moncel | English | March 22, 2025 | 502.4K | 75683 |
| The Telescope | Louis Bell | English | December 16, 2016 | 536.7K | 53740 |
| The Theory and Practice of Model Aeroplaning | V. E. Johnson | English | October 21, 2012 | 325.2K | 41135 |
| The Thompson-Houston System of Electric Lighting | H. T. Cory | English | January 5, 2017 | 66.3K | 53893 |
| The Train Wire: A Discussion of the Science of Train Dispatching | John Alexander Anderson | English | February 9, 2016 | 237.9K | 51158 |
| The Traveling Engineers' Association | Anonymous | English | February 17, 2006 | 339.6K | 17783 |
| The true history of the ghost | John Henry Pepper | English | January 9, 2024 | 162.6K | 72672 |
| The Tunnel Under the Channel | Thomas Whiteside | English | November 7, 2021 | 243.4K | 66685 |
| The turner's companion | Anonymous | English | February 21, 2023 | 170.4K | 70100 |
| The Use of Ropes and Tackle | Homer J. Dana | English | February 17, 2018 | 132.3K | 56585 |
| The Useful Arts Employed in the Construction of Dwelling Houses. Second Edition | Anonymous | English | March 15, 2022 | 515.1K | 67636 |
| The Valuation of Public Service Corporation Property | Henry Earle Riggs | English | February 24, 2016 | 1.0M | 51298 |
| The violin and the art of its construction: a treatise on the Stradivarius violin | August Riechers | English | July 20, 2022 | 70.8K | 68575 |
| The Voice of the Machines | Gerald Stanley Lee | English | January 15, 2007 | 223.5K | 20361 |
| The watchmakers' hand book | Claudius Saunier | English | September 10, 2025 | 864.2K | 76850 |
| The Water Supply of the El Paso and Southwestern Railway from Carrizozo to Santa Rosa, N. Mex. | J. L. Campbell | English | August 5, 2005 | 76.0K | 16440 |
| The Way of the Air: A Description of Modern Aviation | Edgar Charles Middleton | English | March 28, 2016 | 235.2K | 51581 |
| The Woman's Part: A Record of Munitions Work | L. K. Yates | English | December 29, 2011 | 170.3K | 38437 |
| The Wonderland of Trinidad | — | English | December 13, 2019 | 35.4K | 60911 |
| The Working of Steel | Fred H. Colvin | English | January 4, 2007 | 477.2K | 20282 |
| The works of the highly experienced and famous chymist, John Rudolph Glauber | Johann Rudolf Glauber | English | August 12, 2024 | 4.9M | 74240 |
| The Wright Brothers | Anonymous | English | September 1, 2021 | 53.9K | 66194 |
| The Wright Brothers | Fred C. Kelly | English | March 21, 2022 | 569.5K | 67672 |
| The Wright Brothers' Engines and Their Design | Leonard S. Hobbs | English | February 2, 2012 | 181.3K | 38739 |
| Theory and Practice of Piano Construction | William Braid White | English | June 18, 2018 | 366.7K | 57354 |
| Theory of Silk Weaving | — | English | — | 93.4K | 14600 |
| Three little lines | Josie Moore Crum | English | July 16, 2020 | 117.5K | 62664 |
| Three textile raw materials and their manufacture | — | English | July 10, 2023 | 204.5K | 71158 |
| Time and Clocks: A Description of Ancient and Modern Methods of Measuring Time | Sir Henry H. Cunynghame | English | April 13, 2017 | 255.0K | 54546 |
| Time and Time-Tellers | active 1857-1887 James W. Benson | English | June 4, 2014 | 244.7K | 45883 |
| Time Telling through the Ages | Harry Chase Brearley | English | January 9, 2015 | 521.6K | 47928 |
| Tinting and toning of Eastman positive motion picture film | — | English | March 30, 2023 | 75.2K | 70417 |
| Torpedo War, and Submarine Explosions | Robert Fulton | English | April 13, 2016 | 124.5K | 51748 |
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