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| Title | Date | From Archive Folder | Document Type | |
|---|---|---|---|---|
| A. G. Smith to John Cotton Mather regarding the collapse of a dock on the Erie Canal | 19 March 1851 | Documents Relating to 1851 | Correspondence | |
| A. O. Taylor to Joseph M. Maitland informing him that he took Bell to a party and has bought a new buggy with no top | 15 June 1864 | Collection of Joseph M. Maitland | Correspondence | |
| A.B. Sperling to A.F. Williams about his lost right arm | 29 May 1866 | Papers of George May Powell | Correspondence | |
| A.F. Williams to J.W. Sullivan about patents and commissions on artificial limb sales | 1 June 1865 | Papers of George May Powell | Correspondence | |
| Abraham Eustis to Doctor Robert Archer discussing maritime issues | 14 June1837 | Letters and documents relating to the Jeffery/Woodlief families and naval matters | Correspondence | |
| Abraham Lincoln to Gen. Stephen A. Hurlbut about automatic navy rifles | 4 August 1863 | Unassociated Civil War Documents 1863 | Government document; Military document; Correspondence | |
| An account of Cash paid "at Sundry Times to my Compy" | ca. 1776 | The Henry Knox Papers [0015] September-December 1776 | Military document | |
| Act allowing Henry Knox and others to build a canal from the Connecticut River to Boston | 9 March 1792 | The Henry Knox Papers [0107] March 1792 | Government document | |
| Agrarian justice, opposed to agrarian law, and to agrarian monopoly... | ca. 1797 | Documents Relating to 1797 | Pamphlet | |
| Agreement between Henry Knox and Benjamin Bussey | 8 July 1805 | The Henry Knox Papers [0156] July-December 1805 | Business and financial document; Legal document; Land transaction document | |
| Agreement between Wheeler & Goldthwait | 30 November 1772 | The Henry Knox Papers [0005] 1770-1772 | Business and financial document | |
| Agreement to pay for work on a canal | 18 November 1795 | The Henry Knox Papers [0128] October-December 1795 | Correspondence; Business and financial document | |
| Album of Virginia | 1858 | Documents Relating to 1858 | Book; Artwork | |
| Alexander Graham Bell to C. F. Manahan regarding the connection of telephone lines | 12 March 1877 | Documents Relating to the 1870s | Correspondence | |
| Alexander Graham Bell to Clara Hammond McGuigan about issues relating to deaf education and the effectiveness of different sign languages | 12 February 1897 | Documents Relating to the 1890s | Correspondence | |
| Alexander Hamilton to Custom Officers discussing dice's hydrometer | 18 December 1790 | Collection of two documents related to Dycas's Hydrometer | Correspondence | |
| Alexander von Humboldt to James Madison [in French] | 21 July 1814 | Documents Relating to 1814 | Correspondence | |
| Alfred Cowles to A.F. Williams about a good deal for an artificial limb | 26 April 1866 | Papers of George May Powell | Correspondence | |
| Alfred Gibson to Tobias Gibson regarding a ruined cotton crop | 18 May 1857 | Archive of Confederate general & family re: plantation and slaves | Correspondence | |
| Alfred Hughes to Mary Hughes about weather, the origin of races and opinion of Judge Thompson | 5 October 1862 | Collection of Alfred Hughes, a detainee at Camp Chase, Ohio, as a Confederate sympathizer | Correspondence | |
| The American Museum, or Universal Magazine | February 1791 | Documents Relating to 1791 | Newspapers and Magazines | |
| Andrew Oliver to Henry Knox about unfulfilled book orders | 15 June 1774 | The Henry Knox Papers [0009] May-June 1774 | Correspondence; Business and financial document | |
| Andrew Oliver to Henry Knox inquiring about a book order | 4 January 1774 | The Henry Knox Papers [0008] January-April 1774 | Correspondence; Business and financial document | |
| Andrew Oliver to Henry Knox regarding book orders | 19 April 1773 | The Henry Knox Papers [0006] January-May 1773 | Correspondence; Business and financial document | |
| Andrew Oliver to Henry Knox regarding a year-old order for books | 7 March 1774 | The Henry Knox Papers [0008] January-April 1774 | Correspondence; Business and financial document | |
| Andrew Oliver to Henry Knox returning a copy of the Nautical Almanac | 28 March 1773 | The Henry Knox Papers [0006] January-May 1773 | Correspondence; Business and financial document | |
| Anna McSherry to Henry F. McSherry regarding a newspaper report of Henry's ship crashing and their fathers fascination with new technology | 8 July 1866 | Letters to Assistant Surgeon Henry F. McSherry of the U.S. Navy | Correspondence | |
| Anne-César Luzerne to Henry Knox [in French] discussing the delivery of an engraved cannon, as well as exchanging general pleasantries | 20 November 1783 | The Henry Knox Papers [0069] November 1783 | Correspondence | |
| Anthony Dey to Aaron Hobart regarding a flax sample | 18 February 1822 | Aaron Hobart Collection | Correspondence | |
| Appointment of Benjamin J. French | 21 December 1847 | Documents Relating to 1847 | Non-governmental organization document | |
| Appointment of Joseph Jackson Coombs as an examiner-in-chief of the United States Patent Office | 6 August 1861 | Documents Relating to the 1860s | Government document | |
| Archive of Alexander Twining | 1837-1883 | Documents Spanning Decades | Correspondence; Miscellany | |
| Army return for the corps of sappers and miners of Constitution Island, New York | 19 September 1783 | The Henry Knox Papers [0065] 16-30 September 1783 | Military document | |
| Army return for the corps of sappers and miners of Constitution Island, New York [duplicate] | 19 September 1783 | The Henry Knox Papers [0065] 16-30 September 1783 | Military document | |
| Army Return of the Sappers and Miners Corps | 10 October 1783 | The Henry Knox Papers [0066] 1-10 October 1783 | Military document | |
| Article upon the determination of altitudes from observations taken with the barometer... | 1857 | Documents Relating to 1857 | Pamphlet | |
| Articles necessary for a field laboratory | 19 July 1780 | The Henry Knox Papers [0023] July-December 1780 | Military document | |
| Articles of agreement and association, constituting the Magnetic Telegraph Society | 15 May 1845 | The Livingston Family Papers [109] 1836-1897 | Pamphlet | |
| Articles of agreement between H Knox and J. Hills | 8 April 1791 | The Henry Knox Papers [0099] March-April 1791 | Land transaction document | |
| Articles of the Sun-Fire-Society, instituted at Boston 8th May 1765 | ca. 1776-1795 | The Henry Knox Papers [0004] 1760-1769 | Non-governmental organization document | |
| Asa Gray to unknown bookseller about copies of Gray's manual of botany | 13 July 1854 | Documents concerning American explorers, adventurers and naturalists | Correspondence | |
| Autobiographical note related to Henry W. Halleck's work at the New Almaden Quicksilver mines | ca. 1855-1861 | Undated Documents Relating to the Post-Revolutionary Era | Miscellany | |
| Autograph manuscript map of Boston drawn and annotated by Trumbull | September 1775 | Documents Relating to 1775 | Map | |
| Becker's patent table-top "sweetheart" two person stereo viewer | ca. 1867 | Documents Relating to the 1860s | Object | |
| Benjamin Franklin to Marquise de Boulainvilliers discussing a humorous use for Franklin's lightning rods and the marriage of the Marquise's daughter | 1 January 1779 | Documents Relating to 1779 | Correspondence | |
| Benjamin Franklin to Michel G. de Crevecoeur | 16-17 February 1788 | Documents Relating to 1788 | Correspondence | |
| Benjamin Hichborn to Henry Knox about business and American neutrality | 19 October 1793 | The Henry Knox Papers [0120] October-December 1793 | Correspondence | |
| Benjamin Hichborn to Henry Knox about the Waldo patent court decision and the building of a canal | 11 March 1792 | The Henry Knox Papers [0107] March 1792 | Correspondence; Business and financial document | |
| Benjamin Hichborn to Henry Knox regarding canals and foreign affairs | 9 January 1793 | The Henry Knox Papers [0117] January-March 1793 | Correspondence; Business and financial document | |
| Benjamin Hichborn to Henry Knox regarding canals and political affairs in England | 14 December 1792 | The Henry Knox Papers [0116] December 1792 | Correspondence | |
| Benjamin Lincoln to Henry Knox about military repairs and administration | 28 August 1782 | The Henry Knox Papers [0045] August 1782 | Correspondence; Military document | |
| Benjamin Lincoln to Tobias Lear regarding a visit to Philadelphia | 20 October 1791 | Tobias Lear papers | Correspondence | |
| Benjamin West to Henry Knox about book selling | 22 January 1773 | The Henry Knox Papers [0006] January-May 1773 | Correspondence; Business and financial document | |
| Biographical record of Francis B. Ogden | n.d. | Biographical notes on Eighteenth and Nineteenth Century Americans | Miscellany | |
| Birdseye views of roundhouse and train yard in winter | ca. 1893 | Collection of 42 cyanotype photographs of the Fitchburg, Massachusetts Railroad | Photograph | |
| Bonner's notes related to a recent meeting of the Association of Manhattan Project scientists in the New York City area | ca. 1 November 1945 | Collection relating to Irving Kaplan and Francis Bonner on controlling atomic power | Non-governmental organization document | |
| Books bought from John Bell | 27 January 1780 | The Henry Knox Papers [0022] January-June 1780 | Business and financial document | |
| Boston & Albany boxcars in train yard | ca. 1893 | Collection of 42 cyanotype photographs of the Fitchburg, Massachusetts Railroad | Photograph | |
| Boundaries of land belonging to the twenty associates | ca. 1794 | The Henry Knox Papers [0121] January-March 1794 | Legal document | |
| Bullet with brass casing | ca. 1861-1865 | Civil War Objects from Gettysburg National Militay Park | 360 Object | |
| C.B. Lyons to Helen Lyons regarding camp life and motion pictures | 02 July 1918 | Collection of World War I correspondence | Correspondence | |
| Cabinet photograph by H. Rocher of Cyrus H. McCormick, signed | ca. 1875-1880 | Unassociated Photographs of the Civil War | Photograph | |
| Calling card of Samuel F. B. Morse | ca. 1870 | Documents Relating to the 1870s | Miscellany | |
| Canuck/Curtiss hybrid airplane diagrams | ca. June 1982 | Documents relating to Neta Snook, Amelia Earhart's flight instructor | Miscellany | |
| Carte de visite portrait of Samuel F. B. Morse by George C. Rockwood | ca. 1870 | Documents Relating to the 1870s | Photograph | |
| Ceremony of the last rail [Russell #224?] | 10 May 1869 | The Joining of the rails [six albumen photographs of railroad] | Photograph | |
| Ceremony of the last spike [Russell #223] | 10 May 1869 | The Joining of the rails [six albumen photographs of railroad] | Photograph | |
| Certificate admitting John Lorimer to the Aberdonian Medical Society [In Latin] | 9 April 1793 | Collection of items pertaining to Doctor John Lorimer | Non-governmental organization document | |
| Certificate for one share of "Hudson River Steam-Boat Stock" | 1 August 1814 | Documents Relating to 1814 | Business and financial document | |
| Certificate issued by the Royal Icelandic Literary Society [In Icelandic] | 13 September 1791 | Collection of items pertaining to Doctor John Lorimer | Non-governmental organization document | |
| Certificate of Tests | Papers of George May Powell | Non-governmental organization document | ||
| Certification concerning 13 inch shells | 22 July 1780 | The Henry Knox Papers [0023] July-December 1780 | Military document | |
| Certifying copy of patent issued to Nathaniel and Philip W. Miller | 7 May 1818 | Documents Relating to 1818 | Government document; Legal document | |
| Charles E. Walbridge to his mother about offering his brother a job, his surprise at the number of women who are marrying at home and torpedo attacks on "ironsides" | 24 October 1863 | Charles E. Walbridge Collection | Correspondence | |
| Charles E. Walbridge to his mother mentioning the sinking of the steamer "Fanning" and his role as Quartermaster | 7 May 1864 | Charles E. Walbridge Collection | Correspondence | |
| Charles E. Walbridge to his mother sending a rose and discussing torpedo attacks | 8 April 1864 | Charles E. Walbridge Collection | Correspondence | |
| Charles Ellet to A. Thomas regarding family | 15 October 1860 | Unassociated Civil War Documents 1860 | Correspondence | |
| Charles G. Horsfall to my dear children regarding his job delivering mail, a Native American's description of a phonograph and encouraging them to exercise | 09 November 1906 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to my dear children regarding investing in a mine and his work on it | 15 March 1905 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to My son regarding his son attending a church mission and his recent birthday | 17 August 1908 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to "Owen and all" describing his work on building a waterwheel and piers, the health of the Eskimos and a Government Experimental farm | 27 April 1906 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to Owen Horsfall describing children playing in the river, the loss of two dogs and his intent to construct a bridge | 27 October 1901 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to Owen Horsfall discussing Owen's future career, his stake in the mine and family information | 22 July 1905 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to Owen Horsfall regarding attending Owen's college Commencement, leaving the area and a railway line proposal | 19 June 1905 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to Owen Horsfall regarding his investments, Mormons in Germany, his time in Alaska and advice on choosing a wife | 06 October 1909 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to Owen Horsfall regarding his separation from his wife, the strike in Koykuk, politics and the telegraph system | 07 September 1904 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles G. Horsfall to: "my dear boys." describing the weather, his work on a suspension bridge and his animals | 20 April 1902 | Collection of letters of Charles Horsfall | Correspondence | |
| Charles Goodyear to Benjamin Silliman | 20 August 1842 | Documents relating to American inventors | Correspondence | |
| Charles Herbert Allen to John G. Walker regarding his duties as a "Senior Member of a Board for the location of a bridge across the Niagara River" | 19 August 1898 | John Grimes Walker's naval correspondence | Correspondence | |
| Charles Herbert Allen to John G. Walker regarding his duties as a "Senior Member of a Board for the location of a bridge across the Niagara River" | 3 September 1898 | John Grimes Walker's naval correspondence | Correspondence | |
| Charles Sumner to [Arnold] B. Johnson on the benefits of a good water closet | 5 October 1863 | Collection relating to Charles Sumner | Correspondence | |
| Charles Wheeler to A.F. Williams about buying a limb and government subsidies | 24 April 1866 | Papers of George May Powell | Correspondence | |
| Charles-Herbert Walker to John G. Walker with instructions to regard himself as detached from his duties in relation to the bridge over the Niagara River | 30 March 1899 | John Grimes Walker's naval correspondence | Correspondence | |
| Charlie Brinkerhoff to Mr. Condell asking for a leg pamphlet | 14 April 1866 | Papers of George May Powell | Correspondence | |
| Check written out to Robert Fulton | ca. 1801-1813 | Undated Documents Relating to the Post-Revolutionary Era | Business and financial document | |
| Chemical Notes, on Gunpowder and its Materials | 1838 | Documents Relating to 1838 | Pamphlet | |
| Circular letter written by Joel Roberts Poinsett announcing the establishment of the Smithsonian Institution | 10 September 1840 | Documents Relating to 1840 | Correspondence; Pamphlet | |
| Clerical excursionists at Laramie City | 10 May 1869 | The Joining of the rails [six albumen photographs of railroad] | Photograph | |
| Collection of 23 letters pertaining to the Red Cross | 1903 | Unassociated Civil War Documents 1865-1929 | Correspondence | |
| Composite images of railroad tracks going around a curve | ca. 1893 | Collection of 42 cyanotype photographs of the Fitchburg, Massachusetts Railroad | Photograph | |
| Contract between The Edison Electric Illuminating Co. of Shamokin, Pennsylvania and Thomas Alva Edison | 4 May 1883 | Documents Relating to the 1880s | Business and financial document | |
| Contract for artificial limbs | 1865 | Papers of George May Powell | Business and financial document | |
| Contract granting a share in the Cannon Rifle | 19 April 1862 | Papers of George May Powell | Legal document; Business and financial document | |
| Contract with Henry H. Sibley, witnessed by H. P. Brewster | 9 March 1857 | Collection of William E. Jones | Legal document; Military document | |
| Copy book of E.R. Archer | 4 August 1878 to 1 October 1878 | Archive of Confederate naval operations: Va. volunteer navy, Tredegar Iron Works | Correspondence; Book; Diary | |
| Cost estimates to build a canal | ca. 1790 | The Henry Knox Papers [0093] 1790 | Business and financial document | |
| Curtiss airplane blueprints | no date. | Documents relating to Neta Snook, Amelia Earhart's flight instructor | Miscellany | |
| Cyrus Hall McCormick to unknown regarding an approaching meeting | 13 April 1867 | Documents Relating to the 1860s | Correspondence | |
| Cyrus West Field to James W. Patterson re: documents, asking views on the Pacific telegraph | 1871/10/17 | Documents Relating to the 1870s | Correspondence | |
| D.M. Scott to A. F. Williams about coming to get a fitting for an artificial limb | 22 June 1866 | Papers of George May Powell | Correspondence | |
| David Cobb to Henry Knox [incomplete] about land surveys | 13 August 1792 | The Henry Knox Papers [0112] August 1792 | Correspondence | |
| David Cobb to Henry Knox about his son accepting a military commission from the President and his hopes to build a canal | 3 April 1791 | The Henry Knox Papers [0099] March-April 1791 | Correspondence | |
| David Cobb to Henry Knox about layout of towns and roads in Maine | 11 October 1795 | The Henry Knox Papers [0128] October-December 1795 | Correspondence | |
| David Cobb to Henry Knox concerning the decision to allow their canal to be built | 11 March 1792 | The Henry Knox Papers [0107] March 1792 | Correspondence; Business and financial document | |
| David Cobb to Henry Knox discussing a canal between the Charles River and Connecticut River | 19 December 1790 | The Henry Knox Papers [0097] October-December 1790 | Correspondence | |
| David Cobb to Henry Knox discussing a possible canal from Boston to the Connecticut River and political elections | 5 December 1792 | The Henry Knox Papers [0116] December 1792 | Correspondence; Government document | |
| David Cobb to Henry Knox on the Canal from the Connecticut River to Boston | 4 September 1791 | The Henry Knox Papers [0102] September-October 1791 | Correspondence; Government document | |
| David Rittenhouse to John Page regarding a solar eclipse | 18 August 1777 | Documents Relating to 1777 | Correspondence | |
| David Smith to an unknown recipient about military signalling | 14 October 1782 | The Henry Knox Papers [0047] October 1782 | Correspondence | |
| the Department of State Patent Office to Nathaniel Cutting regarding appointing arbitrator to settle dispute about a patent for an invention | 16 February 1818 | Documents Relating to 1818 | Correspondence; Government document | |
| Depositions of Andrew Bartholomew and Arthur H. Roorbach concerning their time as steamboat captains | 13 December 1813 | Documents Relating to 1813 | Legal document | |
| Description of an artillery laboratory | 3 March 1777 | The Henry Knox Papers [0016] January-April 1777 | Military document | |
| Description of a rain-gauge | ca. 1815 | Documents Relating to 1815 | Miscellany | |
| Description of the scale of accompanying dais's hydrometer | 1790 | Collection of two documents related to Dycas's Hydrometer | Broadside | |
| Description of township "No 1 in the second range" | 16 December 1786 | The Henry Knox Papers [0078] September-December 1786 | Miscellany | |
| Description of townships | 1786 | The Henry Knox Papers [0077] January-August 1786 | Miscellany | |
| Descriptive book of the Album of Virginia | 1858 | Documents Relating to 1858 | Book | |
| Detailed description of a plow | ca. 1800 | Tobias Lear papers | Business and financial document | |
| Diagram of an arch | ca.1863 | Journal and drawings of bombproofs, with collateral | Miscellany; Military document | |
| Diagram of an fascine | ca.1863 | Journal and drawings of bombproofs, with collateral | Miscellany; Military document | |
| Diagram of a hole dug for an iron cylinder | ca.1863 | Journal and drawings of bombproofs, with collateral | Miscellany; Military document | |
| Diagram of a naval weapon | ca. 27 November 1775 | The Henry Knox Papers [0011] 1775 | Military document; Artwork | |
| Diario de viage de la Comision de limites que puso el gobierno de la Republica bajo la direccion del exmo. sr. general de division d. Manuel de Mier y Teran [in Spanish] | 1850 | Documents Relating to 1850 | Book | |
| Dimensions of a Thrashing Machine belonging to James Tod | ca. 1800 | Tobias Lear papers | Business and financial document | |
| Discussion regarding a small cannon | ca. 1777-1778 | The Henry Knox Papers [0161] Undated: Revolutionary War | Military document | |
| Dr. Tachmyrtis to Blanche Kelso Bruce in regards to a positing on the Woodruff Scientific Expedition | 26 March 1879 | Collection of letters of the first African American to serve a full term in the Senate | Correspondence | |
| Draft of the preliminary statement of the Association of Manhattan District Scientists | ca. August 1945 | Collection relating to Irving Kaplan and Francis Bonner on controlling atomic power | Non-governmental organization document | |
| Drawing of dimensions for a spindle | ca. 3 August 1777 | The Livingston Family Papers [084] 1777-1779 | Miscellany | |
| Drawing Plans for a mill | n.d. | The Livingston Family Papers [110] Undated: Miscellany | Miscellany | |
| The duc de la Rochefoucauld to Henry Knox recommending a young man interested in engineering | 29 December 1795 | The Henry Knox Papers [0128] October-December 1795 | Correspondence | |
| E.M. Brink to A.F. Williams asking for price of limbs | 20 April 1866 | Papers of George May Powell | Correspondence | |
| Edmond Charles Édouard Genêt re: improving navigation of Hudson River | ca. 1790 | Documents Relating to 1790 | Non-governmental organization document | |
| Edwin Samuel Gaillard to Sir about artificial limb factories in the South | 16 May 1866 | Papers of George May Powell | Correspondence | |
| Edwin Truell to A. F. Williams requesting a Condell Limbs circular | 12 April 1866 | Papers of George May Powell | Correspondence | |
| Elbridge Gerry to James T. Austin commenting on the loss of a ship, the Ways and Means Committee and the presidency | 23 June 1813 | Documents Relating to 1813 | Correspondence; Government document | |
| An elementary course in civil engineering for the use of the cadets of the United States Military Academy | 1838 | Documents Relating to 1838 | Book; Military document | |
| Elements of military art and science | 18 July 1862 | Unassociated Civil War Documents 1862 | Book | |
| Eli Whitney to John Trumbull introducing the artist Trumbull to another artist, Lucius Manson | 8 May 1819 | Documents relating to American inventors | Correspondence | |
| Eli Whitney to Timothy Pitkin regarding Whitney's business partner | 12 June 1796 | Documents Relating to 1796 | Correspondence | |
| Elias Howe to Tucker about measuring the state room | 18 April 1855 | Documents relating to American inventors | Correspondence | |
| Elisha Gray regarding a copy of an article | 25 March 1898 | Documents Relating to the 1890s | Correspondence | |
| Elisha Kent Kane to Mr. Ticknor with thanks | 17 March 1853 | Documents concerning American explorers, adventurers and naturalists | Correspondence | |
| Employment Agreement | 3 February 1796 | The Henry Knox Papers [0129] January-March 1796 | Legal document | |
| Endorsement by Abraham Lincoln and Winfield Scott | 22 October 1861 | Unassociated Civil War Documents 1861 | Correspondence | |
| Engraving of Samuel F. B. Morse | ca. 1870 | Documents Relating to the 1870s | Artwork | |
| Establishment of the United States Military Philosophical Society | 1 December 1805 | The Henry Knox Papers [0156] July-December 1805 | Correspondence; Military document; Non-governmental organization document | |
| Estimate for a canal built between Barnstable and Buzzard's Bay | 3 December 1791 | The Henry Knox Papers [0103] November-December 1791 | Business and financial document | |
| Estimate of articles necessary for a field laboratory | 17 July 1780 | The Henry Knox Papers [0023] July-December 1780 | Military document | |
| Estimate of expenses regarding a canal | ca. 1790-1820 | The Henry Knox Papers [0163] Undated: Knox as Landlord | Business and financial document | |
| Estimates concerning a canal | ca. 1791 | The Henry Knox Papers [0103] November-December 1791 | Miscellany | |
| Expenditures for first telegraph between Washington, D.C. and Baltimore | 31 March - 8 April 1843 | Documents Relating to 1843 | Business and financial document | |
| Expense of Survey for a Navigation from Connecticut river to Charles river | ca. 1790 | The Henry Knox Papers [0093] 1790 | Miscellany | |
| The Fire-Proof Building Company, of New York | n.d. | Papers of George May Powell | Broadside | |
| Five rare kinetososcope (moving pictures) still photos | 1906-1908 | Documents Relating to the 1900s | Photograph | |
| 'Foster' to his cousin about activities at Brown University | 14 June 1858 | Documents Relating to 1858 | Correspondence | |
| Frederic Pearce to his father about a comet | 1 July 1861 | Collection of Pearce family correspondence | Correspondence | |
| Frederick Eckstein to Robert M. Patterson regarding the Philadelphia General Committee of Defence | 18 September 1814 | Documents relating to the defense of Philadelphia | Military document; Correspondence | |
| From Sandbar to Forbay over the Stanislaus Flume | 4 August 1921 to December 1924 | Documents Relating to the 1920s | Photograph | |
| Full length carte de visite portrait of twins Waino and Plutano | n.d. | Collection of cartes-de-visites | Photograph | |
| General Order. No. 14 | 27 December 1847 | Documents Relating to 1847 | Military document | |
| General Remarks on the Motion of Machines | ca. 1838 | Documents Relating to 1838 | Pamphlet | |
| A geographical description of the United States, with the contiguous countries, including Mexico and the West Indies, intended as an accompaniment to Melish's map of these countries | 1822 | Documents Relating to 1822 | Book | |
| George Brinton McClellan to George D. Ramsay, introducing Mr. Adolph Schniewind | 13 August 1864 | Unassociated Civil War Documents 1864 | Correspondence; Military document | |
| George Brinton McClellan to Jefferson Davis on the island of Hispaniola | 30 September 1854 | Documents Relating to 1854 | Correspondence | |
| George Gordon Meade to Messrs. Bond & Lear discussing telescopes and other merchandise | 6 April 1860 | Documents Relating to the 1860s | Correspondence | |
| George May Powell to Emma C. Small about her illness, work at the Senate and his military inventions | 28 October 1862 | Papers of George May Powell | Correspondence | |
| George May Powell to Emma C. Small about his religious beliefs, his inventions and hospital work and taxes | 1 February 1864 | Papers of George May Powell | Correspondence | |
| George May Powell to Hon. N.C. Ely about fireproofing homes | 10 May 1876 | Papers of George May Powell | Correspondence | |
| George Powell May to "Gents." about fireproofing buildings | 24 January 1883 | Papers of George May Powell | Correspondence | |
| George Powell to "Gentlemen" about an art publication of his and a new invention | 17 February 1882 | Papers of George May Powell | Correspondence | |
| George Powell to Joseph T. Edwards and others about waste in America | 12 May 1886 | Papers of George May Powell | Correspondence | |
| George Turner to A.F. Williams about artificial limbs | 4 May 1866 | Papers of George May Powell | Correspondence | |
| George Turner to Henry Knox about navigation on the Wabash River | ca. 20 December 1791 | The Henry Knox Papers [0103] November-December 1791 | Correspondence | |
| George Ulmer to Henry Knox about court and a bridge | 19 April 1800 | The Henry Knox Papers [0142] January-April 1800 | Correspondence; Land transaction document | |
| George Washington Carver to Grady Porter | 9 August 1931 | Documents Relating to the 1930s | Correspondence | |
| George Washington to Alexander McDougall introducing a military engineer | 21 March 1778 | Documents Relating to 1778 | Correspondence; Military document | |
| George Washington to Benjamin Franklin on the belated peace initiatives of the Howe brothers and experiments with submersibles | July 1776 | Documents Relating to 1776 | Correspondence | |
| George Washington to Burgess Ball regarding the purchase of land | 27 July 1794 | Documents Relating to 1794 | Correspondence; Land transaction document | |
| George Washington to Gov. Edward Rutledge about the European war | 9 September 1799 | Documents Relating to 1799 | Correspondence; Government document; Military document | |
| George Washington to Henry Knox about military experiments | 10 February 1781 | The Henry Knox Papers [0026] February 1781 | Correspondence; Military document | |
| George Washington to Henry Knox regarding supplies needed for military experiments | 10 February 1781 | The Henry Knox Papers [0026] February 1781 | Correspondence; Military document | |
| George Washington to John Fitzgerald about lands and projects on the Ohio, Kanawha and Potomac Rivers | 23 July 1785 | Documents Relating to 1785 | Correspondence; Business and financial document | |
| George Washington to Mrs. Elizabeth Powel regarding a reflecting lamp | 8 September 1787 | Documents Relating to 1787 | Correspondence | |
| George Washington to Tobias Lear recommending a man to work on canal locks | 2 December 1795 | Tobias Lear papers | Correspondence | |
| George Westinghouse to R. R. Robinson thanks Robinson for sending books and enclosing a check for $100 [not present] | 3 February 1913 | Documents Relating to the 1910s | Correspondence | |
| The Great West Illustrated... taken along the line of the Union Pacific Railroad | 1869 | Documents Relating to the 1860s | Photograph | |
| Gustavus Vasa Fox to John Dahlgren explaining that Ericsson will produce 1 inch plates and wants his report on the firing of cannon before he proceeds | 10 June 1862 | Unassociated Civil War Documents 1862 | Correspondence | |
| H. H. Gardner to Tobias Lear regarding his "hoisting machine" | 25 July 1795 | Tobias Lear papers | Correspondence | |
| H.W. Halleck to Edwin M. Stanton regarding ironclad riverboats | 25 March 1862 | Unassociated Civil War Documents 1862 | Correspondence | |
| Hadrosaurus | n.d. | Papers of George May Powell | Miscellany | |
| Hand-held stereocard viewer | ca. 1880-1890 | Documents Relating to the 1880s | Object | |
| Hank S. Clark to Washington regarding troop movements and slaves surrounding the camp | 22 July 1861 | Collection of Franklin W. Fuller, I company, 74th regiment, Illinois, infantry | Correspondence | |
| Harold Urey, scientist, dies at 87; war foe's work led to H-bomb [incomplete] | January 1981 | Collection relating to Irving Kaplan and Francis Bonner on controlling atomic power | Newspapers and Magazines | |
| Harry S. Truman to Sir John Anderson referencing a recent visit | 9 January 1946 | Four documents relating to Harry S. Truman | Correspondence | |
| Henry A. Wise to Arnold Elzey regarding Civil War skirmishes and the threat posed by African Americans in the South | 14 January 1863 | Unassociated Civil War Documents 1863 | Correspondence | |
| Henry Jackson to Henry Knox about Boston snows, General Harmar's defeat at the hands of the Indians, the canal idea and a possible European war | 19 December 1790 | The Henry Knox Papers [0097] October-December 1790 | Correspondence | |
| Henry Jackson to Henry Knox about a canal project, the purchase of townships and the offer of a promotion | 4 March 1792 | The Henry Knox Papers [0107] March 1792 | Correspondence; Business and financial document | |
| Henry Jackson to Henry Knox about the Maine land deal and John Hills's canal survey | 28 October 1792 | The Henry Knox Papers [0114] October 1792 | Correspondence; Business and financial document; Government document | |
| Henry Jackson to Henry Knox concerning the Waldo Committee, the reenlistment of soldiers and a canal project | 12 February 1792 | The Henry Knox Papers [0106] February 1792 | Correspondence; Business and financial document | |
| Henry Jackson to Henry Knox on a canal project and discussions over the Waldo lands | 15 February 1792 | The Henry Knox Papers [0106] February 1792 | Correspondence; Business and financial document | |
| Henry Jackson to Henry Knox on a canal, Waldo patent lands and the panic caused by William Duer's finances | 18 March 1792 | The Henry Knox Papers [0107] March 1792 | Correspondence; Business and financial document | |
| Henry Jackson to Henry Knox on John Coffin Jones' potential position as Director of the Bank, plans for the new canal and land matters | 28 August 1791 | The Henry Knox Papers [0101] July-August 1791 | Correspondence; Business and financial document | |
| Henry Jackson to Henry Knox on shares in their canal project and the imprisonment of William Duer | 1 April 1792 | The Henry Knox Papers [0108] April 1792 | Correspondence; Business and financial document | |
| Henry Joseph to W. S. Derrick about Smithsonian Institution matters | 24 April 1850 | Documents relating to American inventors | Correspondence | |
| Henry Knox to Benjamin Lincoln about deficiencies in the supply of ordnance | 22 January 1782 | The Henry Knox Papers [0038] January 1782 | Correspondence; Military document | |
| Henry Knox to Benjamin Lincoln about the establishment of field laboratories | 7 May 1782 | The Henry Knox Papers [0042] May 1782 | Correspondence; Military document | |
| Henry Knox to Benjamin Lincoln about moving artificers from the artillery park | 6 January 1782 | The Henry Knox Papers [0038] January 1782 | Correspondence; Military document | |
| Henry Knox to Benjamin Lincoln about shells | 20 May 1782 | The Henry Knox Papers [0042] May 1782 | Correspondence; Military document | |
| Henry Knox to David Cobb, Henry Jackson, John Coffin Jones and Benjamin Hichborn about a plan to build a canal | 18 June 1792 | The Henry Knox Papers [0110] June 1792 | Correspondence; Government document; Business and financial document | |
| Henry Knox to David Fales about surveying land in Maine | 4 October 1788 | The Henry Knox Papers [0086] October-December 1788 | Correspondence; Land transaction document; Business and financial document | |
| Henry Knox to Ebenezer Dunton, Thomas Vose, and James Waller Head, and [Life] Wilson about saw mills, lumber and canal building | 22 April 1796 | The Henry Knox Papers [0130] April-June 1796 | Correspondence; Business and financial document | |
| Henry Knox to George Clymer concerning a map of the Susquehanna | 29 September 1789 | The Henry Knox Papers [0091] September-October 1789 | Correspondence | |
| Henry Knox to George Ulmer requesting information on lands near Belfast, Maine | 29 September 1788 | The Henry Knox Papers [0085] July-September 1788 | Correspondence; Land transaction document | |
| Henry Knox to Henry Jackson on the price of land and his canal project | 25 March 1792 | The Henry Knox Papers [0107] March 1792 | Correspondence; Business and financial document; Land transaction document | |
| Henry Knox to Isaac Winslow about the lands of the Waldo patent | 24 September 1786 | The Henry Knox Papers [0078] September-December 1786 | Correspondence; Land transaction document | |
| Henry Knox to James Bowdoin about leaving New York and the admission of two Spaniards to the Academy of Arts and Sciences | 23 November 1788 | The Henry Knox Papers [0086] October-December 1788 | Correspondence | |
| Henry Knox to James Byers regarding the casting of artillery | 26 February 1783 | The Henry Knox Papers [0054] 14-28 February 1783 | Correspondence; Military document | |
| Henry Knox to James Malcom asking Malcolm to perform a land survey [incomplete] | 10 October 1806 | The Henry Knox Papers [0158] July-December 1806 | Correspondence; Land transaction document | |
| Henry Knox to James Sullivan about a canal engineer and need for America to rely on its own engineers | 1 February 1794 | The Henry Knox Papers [0121] January-March 1794 | Correspondence | |
| Henry Knox to John Brown about a canal project and states that his investments are tied up in land presently | 22 April 1796 | The Henry Knox Papers [0130] April-June 1796 | Correspondence | |
| Henry Knox to John Bryant regarding the casting of cannons | 2 July 1793 | Archive of Captain John Bryant, Deputy Commissary of Military Stores at the Armory in Springfield, Massachusetts | Correspondence | |
| Henry Knox to John Hills about his good surveying work | 6 June 1791 | The Henry Knox Papers [0100] May-June 1791 | Correspondence | |
| Henry Knox to John Jacob Faesch about shells | 25 May 1782 | The Henry Knox Papers [0042] May 1782 | Correspondence; Military document | |
| Henry Knox to John Jacob Faesch concerning the manufacturing of artillery | 13 August 1782 | The Henry Knox Papers [0045] August 1782 | Correspondence; Military document | |
| Henry Knox to John Maunsell about the public debt and what the United States is doing and discussing foreign affairs | 6 April 1791 | The Henry Knox Papers [0099] March-April 1791 | Correspondence | |
| Henry Knox to John Nazro about patent laws | 24 February 1794 | The Henry Knox Papers [0121] January-March 1794 | Correspondence; Legal document; Land transaction document | |
| Henry Knox to John Quincy Adams about Adams's election as secretary of the Academy of Arts and Sciences | 16 December 1805 | The Henry Knox Papers [0156] July-December 1805 | Correspondence; Non-governmental organization document | |
| Henry Knox to Levi Lincoln about canals | 22 April 1796 | The Henry Knox Papers [0130] April-June 1796 | Correspondence; Business and financial document | |
| Henry Knox to Lucy Flucker Knox about Philadelphia, expelled people from St. Domingo and Washington's visit to a canal | 12 November 1793 | The Henry Knox Papers [0120] October-December 1793 | Correspondence | |
| Henry Knox to Moses Copeland about road building in Maine | 13 September 1794 | The Henry Knox Papers [0123] July-September 1794 | Correspondence; Land transaction document | |
| Henry Knox to Moses Gale and/or Moses Higgins about limestone production and bad quality stone | 23 October 1801 | The Henry Knox Papers [0147] September-October 1801 | Correspondence; Business and financial document | |
| Henry Knox to Peter Charles Varlé asking for canal report | 14 October 1795 | The Henry Knox Papers [0128] October-December 1795 | Correspondence | |
| Henry Knox to Robert Treat Paine | 24 June 1776 | The Henry Knox Papers [0013] May-June 1776 | Correspondence; Military document | |
| Henry Knox to Rufus King about inheritance of the Waldo patent | 13 June 1785 | The Henry Knox Papers [0075] May-August 1785 | Correspondence; Land transaction document | |
| Henry Knox to Sebastian Bauman on his possible engineering career | 7 April 1794 | The Henry Knox Papers [0122] April-June 1794 | Correspondence | |
| Henry Knox to the Secretary of War [Henry Dearborn] praising L'Enfant's work as an engineer | 16 December 1801 | The Henry Knox Papers [0148] November-December 1801 | Correspondence; Military document | |
| Henry Knox to Thomas Hutchins about a survey of the Muscongus patent | 17 December 1787 | The Henry Knox Papers [0082] October-December 1787 | Correspondence; Legal document | |
| Henry Knox to William Smith, Isaiah Thomas, William Hull asking for a surveyor regarding building a canal | 7 April 1791 | The Henry Knox Papers [0099] March-April 1791 | Correspondence; Land transaction document | |
| Henry Knox to Winthrop Sargent about tests on gunpowder | 12 May 1792 | The Henry Knox Papers [0109] May 1792 | Correspondence; Military document | |
| Henry W. Halleck to Brigadier General Cullum, Cairo regarding extending a telegraph | 15 February 1862 | Archive of 104 dispatches, notes and letters from Dept. of Mississippi | Correspondence | |
| Henry W. Halleck to Brigadier General Don Carlos Buell, Louisville regarding constructing a telegraph line | 13 February 1862 | Archive of 104 dispatches, notes and letters from Dept. of Mississippi | Correspondence | |
| Henry W. Halleck to Major General McClellan, Washington regarding communication with Genl. Buell and reinforcements | 7 March 1862 | Archive of 104 dispatches, notes and letters from Dept. of Mississippi | Correspondence | |
| Henry Y. Bell to Condell Leg Manufacturing Corp. | 10 April 1866 | Papers of George May Powell | Correspondence | |
| Hiram Smith to A. F. Williams about picking up his artificial limb | 29 May 1866 | Papers of George May Powell | Correspondence | |
| Hiram Smith to A.F. Williams with limb measurements | 16 April 1866 | Papers of George May Powell | Correspondence | |
| An historical and geographical account of the province and country of Pennsylvania and of West-New-Jersey in America | 1698 | Sixteenth and Seventeenth Century Exploration and Settlement | Book | |
| The history of the New-York African free-school, from their establishment in 1787, to the present time; embracing a period of more than forty years: also a brief account of the successful labors of the New-York Manumission Society | 1830 | Documents Relating to 1830 | Book | |
| Horace Porter to George C. Pullman about revenues, passenger numbers and fuel usage | 9 July 1878 | Documents Relating to the 1870s | Correspondence; Business and financial document | |
| Horace Porter to George C. Pullman with political news and innovations in trains | 12 June 1878 | Documents Relating to the 1870s | Correspondence | |
| Horn's overland guide, from the U.S. Indian sub-agency, Council Bluffs, on the Missouri River, to the City of Sacramento, in California... | 1852 | Documents Relating to 1852 | Book | |
| (House bill, no. 120.) . . . A bill to be entitled An act to compensate Charles E. Stuart, Israel C. Owings and J. H. Taylor for the use of an improvement in instruments for sighting cannon | 26 May 1864 | Confederate imprints: handbills, pamphlets, and Confederate laws | Government document | |
| Ink Diagram of "New Invention of a Corn Mill" | 1701 | The Livingston Family Papers [028] 1701 | Miscellany | |
| Instruments made for the artillery by Mr. John Lamb | 22 May - 2 July 1777 | The Henry Knox Papers [0017] May-August 1777 | Military document; Business and financial document | |
| Interview responses about experiments to grow rubber plants in the United States | ca. February 1928 | Collection of three items related to Thomas Edison and agriculture | Miscellany | |
| Invitation for the President of the National Agricultural Convention | 24 June 1852 | Documents Relating to 1852 | Correspondence | |
| Invoice for books from Thomas [copy] | 18 July 1772 | The Henry Knox Papers [0005] 1770-1772 | Business and financial document | |
| Invoice for books from Thomas Longman | 18 July 1772 | The Henry Knox Papers [0005] 1770-1772 | Business and financial document | |
| Invoices from Wright & Gill | 3 February - 7 March 1772 | The Henry Knox Papers [0005] 1770-1772 | Business and financial document | |
| Ira Allen to George Clinton about Vermont | 23 February 1807 | Documents Relating to 1807 | Correspondence | |
| J. Condell to George May Powell about model arms | 27 March 1866 | Papers of George May Powell | Correspondence | |
| J. Condell to George May Powell about not firing an employee and sending someone to the South | 21 May 1866 | Papers of George May Powell | Correspondence | |
| J. West to Hon. U.S. Frelinghuysen recommending Powell's lecture | 1 November 1873 | Papers of George May Powell | Correspondence | |
| J.A.S. Grant to Professor Owen sending a fossils | 29 April 1873 | Papers of George May Powell | Correspondence | |
| J.T. Paine to A. F. Williams requesting an artificial limbs circular | 25 May 1866 | Papers of George May Powell | Correspondence | |
| James Bowdoin to Henry Knox agreeing to proposed admission of Spanish nobles to Academy of Arts and Sciences | 24 November 1788 | The Henry Knox Papers [0086] October-December 1788 | Correspondence | |
| James Buchanan to Cyrus W. Field congratulating Field on his transatlantic telegraph enterprise | 6 August 1858 | Presidential collection | Correspondence; Business and financial document | |
| James Buchanan to William Milnor Roberts regarding the Cumberland Valley Rail Road | 19 August 1837 | Documents Relating to 1837 | Correspondence | |
| James Burril to George May Powell about a an exhibit of artificial limbs and competition from Georgia and advertising | 23 April 1866 | Papers of George May Powell | Correspondence | |
| James Byers to Henry Knox discussing the casting of cannons | 29 March 1783 | The Henry Knox Papers [0056] 16-31 March 1783 | Correspondence; Military document | |
| James Byers to Henry Knox on the casting of new artillery | 13 February 1783 | The Henry Knox Papers [0053] 1-13 February 1783 | Correspondence; Military document | |
| James Byers to Henry Knox on the setting up of a new foundry | 13 August 1782 | The Henry Knox Papers [0045] August 1782 | Correspondence; Military document | |
| James Byers to Henry Knox regarding the casting of artillery | 19 February 1783 | The Henry Knox Papers [0054] 14-28 February 1783 | Military document | |
| James Malcolm to Henry Knox about a river survey and canal building | 23 March 1796 | The Henry Knox Papers [0129] January-March 1796 | Correspondence; Land transaction document | |
| James Malcolm to Henry Knox about survey results | 7 March 1796 | The Henry Knox Papers [0129] January-March 1796 | Correspondence; Land transaction document | |
| James Monroe to Landon Carter regarding a carriage model he recently received from Carter | 17 June 1811 | Documents Relating to 1811 | Correspondence; Government document | |
| James R. Kelly to Mary Kelly describing the bridge and discussing the change in field commanders | 18 January 1862 | Collection of James R. Kelly, K company, 14th regiment, Indiana, infantry | Correspondence | |
| James R. Kelly to Mary Kelly regarding the estate of C. J. Falkner, someone prowling around his home and the wreckage of the Baltimore and Ohio Railroad yard | 8 March 1862 | Collection of James R. Kelly, K company, 14th regiment, Indiana, infantry | Correspondence | |
| James S. Burrill to George May Powell about expanding artificial limb business into Georgia | 7 May 1866 | Papers of George May Powell | Correspondence | |
| James S. Burrill to George May Powell about waiting for the arm he ordered | 14 April 1866 | Papers of George May Powell | Correspondence | |
| James S. Burrill to George May Powell requesting arm to be sent by express | 20 April 1866 | Papers of George May Powell | Correspondence | |
| James Sullivan and Thomas Russell to Henry Knox about canal building | 9 November 1793 | The Henry Knox Papers [0120] October-December 1793 | Correspondence | |
| James Swan to Henry Knox regarding business in France and the replacement of human labor with machines | 29 March 1788 | The Henry Knox Papers [0083] January-March 1788 | Correspondence; Business and financial document | |
| James W. Ripley to James Woodruff regarding cannons | 21 October 1861 | Unassociated Civil War Documents 1861 | Correspondence | |
| Jay Cooke to F. N. Barrett regarding the publication of a letter | 21 February 1891 | Unassociated Civil War Documents 1865-1929 | Correspondence | |
| Jean Baptiste Gouvion to Henry Knox regarding the Society of Cincinnati | March 1784 | The Henry Knox Papers [0071] January-March 1784 | Correspondence; Non-governmental organization document | |
| Jedediah Morse to Henry Knox about a new edition of his American Geography textbook | 21 December 1791 | The Henry Knox Papers [0103] November-December 1791 | Correspondence | |
| John Adams to Benjamin Rush concerning George Washington, France and scientific societies | 11 November 1807 | Documents Relating to 1807 | Correspondence | |
| John Adams to Robert Fulton on the importance of scientific investigation | 23 June 1813 | Documents Relating to 1813 | Correspondence | |
| John Adams to Samuel Latham Mitchill regarding archaeological matters | 7 February 1817 | Documents Relating to 1817 | Correspondence | |
| John Anderson to George Washington about inventions for artillery | 20 August 1793 | The Henry Knox Papers [0119] July-September 1793 | Correspondence; Military document | |
| John Anderson to George Washington about inventions for artillery | 20 August 1793 | The Henry Knox Papers [0119] July-September 1793 | Correspondence; Military document | |
| John Augusts Roebling to John Linton regarding cement for the building of the first suspension bridge | 9 July 1845 | Documents Relating to 1845 | Correspondence | |
| John Brown to Henry Knox saying people of Worcester and other towns would like a canal to be built | 9 April 1796 | The Henry Knox Papers [0130] April-June 1796 | Correspondence | |
| John Crane to Henry Knox about issues at West Point | 30 April 1782 | The Henry Knox Papers [0041] April 1782 | Correspondence; Military document | |
| John Davis Long to John G. Walker asking to report to the Secretary of War in order to advise on the width of draw or pivot spans in a bridge across the Niagara River | 28 July 1898 | John Grimes Walker's naval correspondence | Correspondence | |
| John Ericsson letter regarding design repairs, possibly for an ironclad | 17 August 1860 | Documents Relating to the 1860s | Correspondence | |
| John Ericsson to Franklin Hanford commenting on Hanford's lecture and discussing an account of a torpedo experiment he published | 8 December 1879 | Documents Relating to the 1870s | Correspondence | |
| John Ericsson to Franklin Hanford discussing torpedo trials and the science that has produced successful results | 25 August 1879 | Documents Relating to the 1870s | Correspondence | |
| John Ericsson to James Bennett defending the merits of the screw propellor | 30 March 1845 | Documents Relating to 1845 | Correspondence | |
| John Ericsson to John B. Kitchen telling him to put off construction of the "Caloric boat" | 4 June 1858 | Documents Relating to 1858 | Correspondence | |
| John Ericsson to Munn & Company about an article on his invention, the ironclad ship | 12 November 1861 | Unassociated Civil War Documents 1861 | Correspondence | |
| John Ericsson to unknown regarding a manual | 17 July 1862 | Documents Relating to the 1860s | Correspondence | |
| John Ericsson to unknown regarding a request for improved engines | 13 December 1859 | Documents Relating to 1859 | Correspondence | |
| John Erisson to unknown about an exhaust valve system | 17 April 1858 | Documents relating to American inventors | Correspondence | |
| John Fitch to John Nicholson regarding a receipt of payment | 13 February 1793 | Documents Relating to 1793 | Correspondence | |
| John Gardiner to Henry Knox about the mechanic Joseph Pope and his latest inventions | 20 August 1791 | The Henry Knox Papers [0101] July-August 1791 | Correspondence; Business and financial document | |
| John Gleason to Henry Knox about a survey in Prospect, Maine | 11 January 1806 | The Henry Knox Papers [0157] January-June 1806 | Correspondence | |
| John Hills to [Henry Knox] about his travels and financial business | 4 October 1792 | The Henry Knox Papers [0114] October 1792 | Correspondence; Business and financial document | |
| John Hills to Henry Knox about his progress surveying land for a canal | 16 September 1792 | The Henry Knox Papers [0113] September 1792 | Correspondence; Business and financial document; Government document | |
| John Hills to Henry Knox about his survey of the route of a canal | 22 July 1792 | The Henry Knox Papers [0111] July 1792 | Correspondence; Business and financial document; Government document | |
| John Hills to Henry Knox about land and surveying | 10 July 1791 | The Henry Knox Papers [0101] July-August 1791 | Land transaction document | |
| John Hills to Henry Knox about the progress of his surveying | 5 August 1792 | The Henry Knox Papers [0112] August 1792 | Correspondence; Business and financial document; Government document | |
| John Hills to Henry Knox mentioning Knox has been appointed Commissioner of a group mapping the eastern United States and asks to be considered for work | 31 March 1796 | The Henry Knox Papers [0129] January-March 1796 | Correspondence | |
| John Hills to Henry Knox regarding his latest surveying efforts to find a route from the Connecticut River to Boston | 7 August 1791 | The Henry Knox Papers [0101] July-August 1791 | Correspondence; Government document | |
| John Hills to Henry Knox with findings of land survey | 2 May 1791 | The Henry Knox Papers [0100] May-June 1791 | Correspondence | |
| John Hills to Henry Knox with land survey updates | 10 May 1791 | The Henry Knox Papers [0100] May-June 1791 | Correspondence | |
| John James Audubon to Richard Harlan regarding journey from Philadelphia to Louisiana and birds he has been studying | 18 November 1829 | Documents Relating to 1829 | Correspondence | |
| John L. Tuttle to Joseph B. Varnum reporting the invention of a new quadrant | 3 March 1806 | Letters to Varnum regarding military and political matters, the Quasi-War, the War of 1812, and patronage | Correspondence | |
| John Lamb to Henry Knox on artillery and ammunition | 19 June 1782 | The Henry Knox Papers [0043] June 1782 | Correspondence; Military document | |
| John Lamb to Henry Knox regarding experiments with howitzers | 6 May 1782 | The Henry Knox Papers [0040] March 1782 | Correspondence; Military document | |
| John Lee to Henry Knox about road building | 11 November 1801 | The Henry Knox Papers [0148] November-December 1801 | Correspondence; Business and financial document | |
| John Marshall to Bushrod Washington regarding the case of Oliver Evans | 28 October 1818 | Documents Relating to 1818 | Correspondence | |
| John Marshall to Jonathan Dayton about a patent for a tide-propelled mill machine | 11 August 1800 | Documents Relating to 1800 | Correspondence | |
| John Maunsell to Henry Knox about French navy and his brother's potato discovery | 8 June 1794 | The Henry Knox Papers [0122] April-June 1794 | Correspondence | |
| John McKellar to Henry Knox asking Knox to use his influence to see him appointed as a lighthouse-keeper | 18 August 1806 | The Henry Knox Papers [0158] July-December 1806 | Correspondence | |
| John Moore to Mary Kelly with an update on westward emigration and the quality of the lands in which he was camped | 22 August 1860 | John Moore Collection | Correspondence | |
| John Quincy Adams to James Mease thanking him for loaning him a pamphlet of weights and measurements | 15 January 1822 | Documents Relating to 1822 | Correspondence | |
| John Quincy Adams to John McLean regarding the responsibility of government to improve transport infrastructure | 6 May 1824 | Documents Relating to 1824 | Correspondence | |
| John Quincy Adams to Robert Fulton asking him to send documentation to secure a patent in Russia | 25 December 1814 | Documents Relating to 1814 | Correspondence | |
| John Quincy Adams to Robert M. Patterson with thanks for new electrotype, improving the art of coining | 29 August 1842 | Documents Relating to 1842 | Correspondence | |
| John Quincy Adams to Solomon Lincoln Esq. | 4 April 1836 | Documents Relating to 1836 | Correspondence | |
| John Quincy Adams to Thomas Aspinwall introducing him to George Bishop, who claims that he has invented a new cloth without spinning and weaving | 15 June 1841 | Documents Relating to 1841 | Correspondence | |
| John Skinner S. to Aaron Hobart requesting support with the publication of "The American Farmer" | 25 November 1822 | Aaron Hobart Collection | Correspondence | |
| John Stevens to John Kean about financial matters | 25 July 1792 | Documents relating to American inventors | Correspondence; Business and financial document | |
| John Trumbull to Henry Knox about new developments in artillery | 15 June 1798 | The Henry Knox Papers [0137] May-August 1798 | Correspondence | |
| John Van Beuren to Robert Livingston regarding a dam at Ancram | 2 July 1784 | The Livingston Family Papers [088] 1784 | Correspondence; Business and financial document | |
| John Vinall to Henry Knox about buying a set of globes | 6 August 1773 | The Henry Knox Papers [0007] June-December 1773 | Correspondence; Business and financial document | |
| John Walker to Thomas Gibbons discussing the beginning of the Panama Canal construction project | 19 July 1904 | Five letters re: the Panama Canal | Correspondence | |
| John Walker to Thomas Gibbons glad to receive a copy of the "Rainbow," a paper published aboard the U.S. Flagship Rainbow | 14 November 1902 | Five letters re: the Panama Canal | Correspondence | |
| John Walker to Thomas Gibbons mentioning that the commission is still waiting for a treaty with Colombia before they can proceed with the panama canal | 31 December 1902 | Five letters re: the Panama Canal | Correspondence | |
| John Walker to Thomas Gibbons regarding the construction of a panama canal | 12 January 1904 | Five letters re: the Panama Canal | Correspondence | |
| John Walker to Thomas Gibbons regarding the treaty with Colombia for the construction of a canal | 23 March 1903 | Five letters re: the Panama Canal | Correspondence | |
| Joining of the rails at Promontory Point [Russell #227] | 10 May 1869 | The Joining of the rails [six albumen photographs of railroad] | Photograph | |
| Joseph Foster Green to William Boud & Son regarding chronometers | 8 October 1861 | Documents Relating to the 1860s | Correspondence | |
| Joseph Francis to Edwards Pierrepont regarding a pontoon bridge | 14 February 1864 | Documents Relating to the 1860s | Correspondence | |
| Joseph Hall to Henry Jackson Knox about Henry Knox's death and a land survey | 6 November 1806 | The Henry Knox Papers [0158] July-December 1806 | Correspondence | |
| Joseph Miller to James Mease regarding the causes of a boiler explosion aboard the steamboat Philadelphia | 29 April 1831 | Documents Relating to 1831 | Correspondence | |
| Joseph W. Farnsworth to Mr. Condell inquiring about artificial limbs | n.d. | Papers of George May Powell | Correspondence | |
| Journal entry on the survey for a canal | 16 July 1792 | The Henry Knox Papers [0111] July 1792 | Diary | |
| Journal of William Ellery's journey from Cranston, Rhode Island, to Philadelphia, Pennsylvania | 10 November 1779 - 15 April 1780 | Collection of five journals chronicling William Ellery's travels to Congress | Diary; Military document | |
| Journal with plans for Bombproof Structures | ca.1863 | Journal and drawings of bombproofs, with collateral | Miscellany; Military document | |
| Jubal Early to Raphael Semmes about being offered a flying machine that can bomb northern cities | 29 August 1873 | Documents Relating to the 1870s | Correspondence | |
| Land agreement between Henry Knox and the inhabitants of Owls Head, Maine | 2 October 1788 | The Henry Knox Papers [0086] October-December 1788 | Land transaction document; Legal document; Business and financial document | |
| Land agreement between Henry Knox and the inhabitants of Owls Head, Maine | 2 October 1788 | The Henry Knox Papers [0086] October-December 1788 | Land transaction document; Legal document; Business and financial document | |
| The laying and completion of the Pacific cable | 1902- 1903 | Documents Relating to the 1900s | Miscellany | |
| Ledger of Peter Cooper | 1836 | Documents Relating to 1836 | Diary | |
| Legal document transferring land to the colony of Rhode Island | 14 June 1776 | Documents Relating to 1776 | Government document; Legal document; Land transaction document | |
| Leonard Cheney to John G. Walker reporting that he was elected at the Triennial Congress of the Naval Order to the office of General Commander | 3 March 1899 | John Grimes Walker's naval correspondence | Correspondence | |
| Leroy Pope Walker to William S. Morris includes a copied version of a dispatch Walker recently received from General Felix Kirk Zollicoffer regarding communication. Walker asks Morris to estimate the cost of this | 9 September 1861 | Unassociated Civil War Documents 1861 | Correspondence | |
| Letter from Alexander P. Anderson to Horace C. Tracy on a variety of subjects | 22 April 1937 | Collection of documents relating to religion and spirituality 1861-1944 | Correspondence | |
| Letter from C. G. Abbot to "Our Heroes Class," First Methodist Church | 8 November 1928 | Collection of documents relating to religion and spirituality 1861-1944 | Correspondence | |
| Letter from Charles Frederick D'Arcy to Mr. Gaskell on the relationship between religion and science | 24 May 1931 | Collection of documents relating to religion and spirituality 1861-1944 | Correspondence | |
| Letter from George Washington Carver to Charles White answering some questions | 26 November 1924 | Collection of documents relating to religion and spirituality 1861-1944 | Correspondence | |
| Letter from George Washington Carver to Mr. Hardwick on spiritual matters | 30 March 1924 | Collection of documents relating to religion and spirituality 1861-1944 | Correspondence | |
| Letter from Warren G. Harding to Robert Coster regarding the modern press | 13 December 1921 | Documents Relating to the 1920s | Correspondence | |
| Letter of introduction from Francisco de Miranda to Henry Knox | 29 March 1790 | The Henry Knox Papers [0094] January-March 1790 | Correspondence | |
| Letter of the Secretary of War, in answer to a resolution of the Senate of the 6th instant, relative to the purchase of extracts of coffee for the use of the troops | 16 January 1862 | Unassociated Civil War Documents 1862 | Correspondence; Military document; Pamphlet | |
| Letter written by John Ericsson to report on the testing of an engine | 28 June 1858 | Documents Relating to 1858 | Correspondence | |
| Letter written by Thomas Paine about a new iron bridge | 1 May 1789 | Documents Relating to 1789 | Correspondence | |
| Letters and sketches: with a narrative of a year's residence among the Indian tribes of the Rocky Mountains | 1843 | Documents Relating to 1843 | Book | |
| Levi Lincoln to Henry Knox about canals | 3 April 1796 | The Henry Knox Papers [0130] April-June 1796 | Correspondence | |
| Lewis Haput Muhlenberg to John G. Walker with whom he was working on the feasibility of creating a canal in Nicaragua | 9 September 1898 | John Grimes Walker's naval correspondence | Correspondence | |
| List of books sent from London to Boston | 16 September 1772 | The Henry Knox Papers [0005] 1770-1772 | Business and financial document | |
| List of goods ordered from Thomas Longman | 10 April 1772 | The Henry Knox Papers [0005] 1770-1772 | Business and financial document | |
| List of letters sent from Samuel F. B. Morse to Edward P. Fry concerning the formation of a telegraph line from New York to Philadelphia in 1844 | ca. 1870 | Collection of letters of Samuel F. B. Morse to Edward P. Fry concerning the New York - Philadelphia telegraph | Correspondence | |
| Locomotives for Saint Louis | December 1841 | Documents Relating to 1841 | Book | |
| Lorin Blodget to Ebenezer Meriam regarding earthquakes & unusual weather changes | 15 January 1853 | Documents Relating to 1853 | Correspondence | |
| Louis Agassiz to unknown about turtle eggs | 22 June 1853 | Documents concerning American explorers, adventurers and naturalists | Correspondence | |
| Louis Agassiz to William Claflin regarding a coast survey | 18 July 1871 | Unassociated Civil War Documents 1865-1929 | Correspondence | |
| Lucretia R. Garfield to Mrs. George W. Childs about her travel plans and the New York subway system | 02 June 1905 | Documents Relating to the 1890s | Correspondence | |
| Luther Burbank to Fred Lockley regarding his stock in cactus companies | 22 October 1907 | Documents Relating to the 1900s | Correspondence | |
| Lyman Bowson to A.F. Williams requesting limbs circular | 19 April 1866 | Papers of George May Powell | Correspondence | |
| M.E. Chase to L.P. Chase, Secretary of the Treasury mentions Fellows as a mutual acquaintance as a way of introduction | 7 October 1861 | Collection of Enoch Q. Fellows, field and staff, 3rd regiment, New Hampshire, infantry | Correspondence | |
| M.M. Taylor to A. F. Williams | 13 April 1866 | Papers of George May Powell | Correspondence | |
| Mahlon Dickerson to the President of the Geological Society of New Haven regarding preparations for the Wilkes expedition | 31 August 1836 | Documents Relating to 1836 | Correspondence | |
| Mammoth portrait photograph inscribed to William Simpkins | ca. 1895 | Documents Relating to the 1890s | Photograph | |
| Manual for Fortification Construction | ca.1863 | Journal and drawings of bombproofs, with collateral | Miscellany; Military document | |
| Manuscript on Fortifications and Combat | ca.1863 | Journal and drawings of bombproofs, with collateral | Miscellany; Military document | |
| Map of Forts Ontario and Oswego and surroundings | ca. 1782-1783 | The Henry Knox Papers [0161] Undated: Revolutionary War | Map; Military document | |
| Map of land | ca. 1796-1806 | The Henry Knox Papers [0163] Undated: Knox as Landlord | Map | |
| Map of Northern Maine | 1830 | The Henry Knox Papers [0159] Post-1806 | Map | |
| Map of part of the Waldo patent | ca. 1790 | The Henry Knox Papers [0093] 1790 | Map | |
| Map of roads in the vicinity of Morristown, New Jersey | 8 January 1777 | The Henry Knox Papers [0016] January-April 1777 | Map; Military document | |
| Map of South Carolina | ca. 1782 | The Henry Knox Papers [0037] 1782 | Map | |
| Map of surveyed land | 1795 | The Henry Knox Papers [0128] October-December 1795 | Map | |
| Map of Yorktown, Virginia | October 1781 | The Henry Knox Papers [0034] October 1781 | Map; Military document | |
| Map to Illustrate Horn's Overland Guide to California and Oregon | 1852 | Documents Relating to 1852 | Map | |
| Martin Van Buren to the Senate of the United States on political matters and how to best use funds in the science and public education fields | 6 December 1838 | Documents Relating to 1838 | Correspondence; Government document | |
| Matthew Perry to Thomas T. Craven with orders to survey an anchorage | 3 January 1844 | Documents Relating to 1844 | Correspondence; Military document | |
| A meditation by Benjamin Pierce on the divine order of the universe | ca. 4 July 1866 | Documents Relating to the 1860s | Miscellany | |
| Memoir of Benjamin Banneker read before the Maryland Historical Society, at the monthly meeting, May 1, 1845 | 1845 | Documents Relating to 1845 | Pamphlet | |
| Memorandum book of E.R. Archer | 20 July 1878 to 31 December 1878 | Archive of Confederate naval operations: Va. volunteer navy, Tredegar Iron Works | Diary; Business and financial document | |
| Mensuration of North River at Dobbs Ferry | ca. 1780 | The Henry Knox Papers [0022] January-June 1780 | Map; Military document | |
| Mettlach Tiles | n.d. | Papers of George May Powell | Business and financial document | |
| Military Pyrotechny, for the use of the Cadets of the U.S. Military Academy, West Point | 1839 | Documents Relating to 1839 | Pamphlet | |
| Monsieur Monvel to Henry Knox about the results of his land survey in Maine | 23 July 1792 | The Henry Knox Papers [0111] July 1792 | Correspondence | |
| Monthly return of the Corps of Sappers & Miners | 24 October 1783 | The Henry Knox Papers [0068] 21-31 October 1783 | Military document | |
| Morris Weiner to Sylvia Weiner | 08 August 1945 | The Weiner Collection | Correspondence | |
| Morris Weiner to Sylvia Weiner | 06 September 1943 | The Weiner Collection | Correspondence | |
| Morris Weiner to Sylvia Weiner | 09 August 1945 | The Weiner Collection | Correspondence | |
| Muster roll of Potomac Company | 18 October 1787 | Documents Relating to 1787 | Military document | |
| N.Y. to sister Bettie discussing family and friends and a 'refrigerator' | 17 September 1875 | Documents Relating to the 1870s | Correspondence | |
| Navigation of Pennsylvania Rivers [Incomplete] | 6 October 1788 | Documents Relating to 1788 | Correspondence | |
| Negro Scientist Shows "Way Out" for Southern Farmers. A Story of George Washington Carver of Tuskegee | 22 December 1929 | Collection of documents relating to religion and spirituality 1861-1944 | Pamphlet | |
| The New-York Times. [Vol. 16, no. 4874 (May 10, 1867)] | 10 May 1867 | Collection of miscellaneous Civil War-era newspapers | Newspapers and Magazines | |
| Newsletter for the Association of Manhattan Project scientists in the New York City area | 1 November 1945 | Collection relating to Irving Kaplan and Francis Bonner on controlling atomic power | Non-governmental organization document | |
| Nicholas Cruger to Henry Knox discussing business and the weather | 24 June 1797 | The Henry Knox Papers [0134] May-August 1797 | Correspondence; Business and financial document | |
| Nicola Lewis to Henry Knox regarding artillery | 30 April 1778 | The Henry Knox Papers [0019] 1778 | Correspondence; Military document | |
| Note on boiling or evaporating in a vacuum | ca. 1830 | Documents Relating to 1830 | Miscellany | |
| A note regarding the oldest paper mill in America | n.d. | Sixteenth and Seventeenth Century Exploration and Settlement | Miscellany | |
| Notes from a class on chemical warfare | 1942 | Collection of WWII letters of Sidney Diamond to Estelle Spero | Military document | |
| Notes from land surveys | ca. 1795-1820 | The Henry Knox Papers [0163] Undated: Knox as Landlord | Land transaction document | |
| Notes of a military reconnoissance [sic] from Fort Leavenworth, in Missouri, to San Diego, in California, including part of the Arkansas, Del Norte, and Gila rivers | 1848 | Documents Relating to 1848 | Book | |
| Notes on Architecture | ca. 1838 | Documents Relating to 1838 | Pamphlet | |
| Notes on the Attack and Defence of Permanent Works | October 1838 | Documents Relating to 1838 | Pamphlet | |
| Notes on dried concentrate for lemonade | ca. 1830 | Documents Relating to 1830 | Miscellany | |
| Notes on the establishment of a money unit | 1784-1785 | Documents Relating to 1784 | Pamphlet; Government document | |
| Notes on the evaporation of glue with heated air | ca. 1830 | Documents Relating to 1830 | Miscellany | |
| Notes on Gunpowder, Percussion, Powder, Cannon and Projectiles | 1841 | Documents Relating to 1841 | Pamphlet | |
| Notes on Mines | ca. 1838 | Documents Relating to 1838 | Pamphlet | |
| Notes on the state of Virginia. Written by Thomas Jefferson | 1787 | Documents Relating to 1787 | Book | |
| Observations on the lands adjacent to the Bay of Fundy, its make, produce, inhabitants &c. | n.d. | The Henry Knox Papers [0163] Undated: Knox as Landlord | Miscellany | |
| Observations on the native silk worms of North America | 11 March 1768 | Documents Relating to 1765-1774 | Pamphlet | |
| Observations regarding the firing of artillery (In French) | ca. 1777-1778 | The Henry Knox Papers [0161] Undated: Revolutionary War | Military document | |
| Oliver Evans to Charles Willing Hare about vacating a property | 7 November 1805 | Documents relating to American inventors | Correspondence; Land transaction document | |
| Oliver Evans to Samuel Pitkin concerning a patent for his steam engine design | 23 November 1811 | Documents Relating to 1811 | Correspondence | |
| One Life. Part I. The Great Karoo | 1969 | Collection of documents relating to religion and spirituality 1861-1944 | Miscellany | |
| The Opelousas courier. [Vol. 12, no. 5 (July 2, 1864)] | 2 July 1864 | Collection of Confederate wallpaper newspapers | Newspapers and Magazines | |
| Opium bottle | ca. 1861-1865 | Civil War Objects from Gettysburg National Militay Park | 360 Object | |
| Orchard Cook to Henry Knox about erecting a lighthouse on Franklin Island | 13 February 1806 | The Henry Knox Papers [0157] January-June 1806 | Correspondence | |
| Order to pay an account for a speaking trumpet for use at Fort George | 3 November 1752 | Documents Relating to 1700-1753 | Business and financial document; Military document | |
| Oriental Reception Advertisement | 18 May 1882 | Papers of George May Powell | Miscellany | |
| Original printing of patent for Bell's telephone patent no.174,465] | 7 March 1876 | Documents Relating to the 1870s | Business and financial document | |
| Our vanishing wild life its extermination and preservation, by William T. Hornaday ... with maps and illustrations | 1913 | Documents Relating to the 1910s | Book | |
| Patent for Abraham Lincoln's improvement in buoying vessels over shoals | 22 May 1849 | Documents Relating to 1849 | Government document | |
| Patent for Benjamin Smith's improvement in the door lock | 13 April 1836 | Patents for inventions | Legal document | |
| Patent for Charles Richardson's improvement in blacksmith's cast iron hollow forge backs | 12 March 1836 | Documents Relating to 1836 | Business and financial document | |
| Patent for Edward West's improvement, being a machine for cutting and heading nails | 6 July 1802 | Documents Relating to 1802 | Legal document; Government document | |
| Patent for Enoch Honeywell's improvement, entitled the Water Elevator | 10 July 1830 | Documents Relating to 1830 | Government document; Legal document | |
| Patent for George Chandler's improvement in making nails | 12 December 1796 | Documents Relating to 1796 | Government document | |
| Patent for George M. Selden's improvement in the tide pump basin or reservoir | 10 March 1828 | Documents Relating to 1828 | Business and financial document | |
| Patent for George Smith's improvement in medicine, entitled anti-dyspeptic pills | 11 August 1821 | Documents Relating to 1821 | Business and financial document | |
| Patent for Hercules Thomas' invention of the Herculean Hub, an improvement in hubs for carriage wheels | 8 February 1828 | Documents Relating to 1828 | Business and financial document; Legal document | |
| Patent for improvement of building fireplaces and chimneys, to Cyrus Blood | 6 April 1825 | Documents Relating to 1825 | Business and financial document; Legal document | |
| Patent for Jacob Bromwell's improvement of the wheat fan, or winnowing machine | 26 November 1818 | Documents Relating to 1818 | Business and financial document | |
| Patent for James Morgan's improvement in warping, dressing, and weaving cotton goods by water or other power | 5 April 1821 | Documents Relating to 1821 | Legal document; Government document | |
| Patent for John Babcock's improvement in printer's ball stocks | 18 March 1818 | Documents Relating to 1818 | Legal document; Government document | |
| Patent for John Templeman's improvement in the chain bridge | 16 August 1808 | Documents Relating to 1808 | Legal document; Government document | |
| Patent for Jordan L. Mott's improvement in the process of chilling castings | 13 June 1848 | Documents Relating to 1848 | Legal document; Government document | |
| Patent for Matthias Baldwin's combination of the steam whistle and the boiler | 28 May 1846 | Patents for inventions | Legal document | |
| Patent for Matthias Baldwin's improvements in steam engine cut-off valves | 13 September 1853 | Patents for inventions | Legal document | |
| Patent for Nathan Currier's improvements in a machine designed to excavate and remove earth] | 29 May 1835 | Documents Relating to 1835 | Legal document; Government document | |
| Patent for Otis Tufts' improvement in the power printing press | 22 August 1834 | Documents Relating to 1834 | Legal document; Business and financial document | |
| Patent for Richard Willcox's improvement in metallurgical operations for accelerating and improving the manipulations of metals in general with the use of anthracite coals in particular | 5 April 1831 | Patents for inventions | Legal document | |
| Patent for Schuyler Fisher's improvement in the Hatter's Plank Kettle | 15 July 1816 | Documents Relating to 1816 | Legal document; Government document | |
| Patent for Silas Hyde's improvements in the bedstead | 2 May 1828 | Documents Relating to 1828 | Legal document; Government document | |
| Patent for Simeon Brown's invention for moving brick, stone, or wooden buildings with the chimneys, furniture, and families therein | 31 July 1827 | Documents Relating to 1827 | Legal document; Government document | |
| Patent for Simeon Heath for improvements in the process of tanning | 23 May 1836 | Documents Relating to 1836 | Legal document; Government document | |
| Patent for Stephen H. Long's improvement in the construction of boilers or steam generators, and of wheels for locomotive steam engines | 9 May 1833 | Documents Relating to 1833 | Business and financial document | |
| Patent for Timothy Taylor for improvement in fastening names on horse collars | 11 March 1835 | Documents Relating to 1835 | Business and financial document; Legal document | |
| Patent for William Willis' improvement in the two-cylinder atmospheric steam engine, or generating steam engine | 14 November 1826 | Patents for inventions | Legal document | |
| Patent granted for improvements in horsepower | 30 March 1835 | Documents Relating to 1835 | Business and financial document | |
| Patent issued to Ephraim Gilbert for the construction of gun locks | 3 April 1829 | Documents Relating to 1829 | Business and financial document | |
| Patent issued to Gould Thorp for inventing an improvement to the cooking stove | 5 June 1836 | Documents Relating to 1836 | Legal document | |
| Patent issued to Robert Dennis for improvement to steam engine | 3 November 1825 | Documents Relating to 1825 | Government document; Legal document | |
| Patent to Oliver Teal for excavating earth underwater | 8 December 1829 | Documents Relating to 1829 | Business and financial document | |
| Patent, Camp Cooking Apparatus | 24 September 1861 | Documents Relating to the 1860s | Legal document | |
| Patents filed through 1859-1864 with patent numbers | n.d. | Papers of George May Powell | Legal document; Business and financial document | |
| Paul Jones Semmes to Joseph E. Brown regarding a powder magazine | 25 December 1860 | Unassociated Civil War Documents 1860 | Correspondence | |
| Personal recollections of Mildred Goldberg, secretary to the theoretical group, SAM Laboratories, The Manhattan Project; 1943-1946 | ca. October 1945 | Collection relating to Irving Kaplan and Francis Bonner on controlling atomic power | Non-governmental organization document | |
| Peter Charles Varlé to Henry Knox about Knox's canal project [incomplete] | 28 September 1795 | The Henry Knox Papers [0127] July-September 1795 | Correspondence | |
| Peter Charles Varlé to Henry Knox about weather and canal construction [incomplete] | 10 October 1795 | The Henry Knox Papers [0128] October-December 1795 | Correspondence | |
| Peter Charles Varlé to Henry Knox discussing a canal | ca. 1794-1795 | The Henry Knox Papers [0163] Undated: Knox as Landlord | Correspondence | |
| Peter Cooper to Unknown discussing coal and gas | ca. 1830 | Documents Relating to 1830 | Correspondence | |
