Our Collection

At the Institute’s core is the Gilder Lehrman Collection, one of the great archives in American history. More than 85,000 items cover five hundred years of American history, from Columbus’s 1493 letter describing the New World through the end of the twentieth century.

Adams, John Quincy (1767-1848) Patent issued to Robert Dennis for improvement to steam engine (c/s Clay)

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Gilder Lehrman Collection #: GLC07020 Author/Creator: Adams, John Quincy (1767-1848) Place Written: Washington, D.C. Type: Document signed Date: 1825/11/03 Pagination: 3 p. ; 37.3 x 28.9 cm Order a Copy

Countersigned by Henry Clay. Joined with a yellow ribbon.

Adams, John Quincy, 1767-1848
Clay, Henry, 1777-1852

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