1William H. Keating to Thomas Jefferson, 1 July 1822 (Jefferson Papers)
American Philosophical Society; members of [index entry]
2John D. Godman and John P. Foote to Thomas Jefferson, 6 March 1822 (Jefferson Papers)
American Philosophical Society; members of [index entry]
3William James Macneven to Thomas Jefferson, 18 December 1821 (Jefferson Papers)
American Philosophical Society; members of [index entry]
4Thomas Jefferson to Lewis Cass, 31 May 1821 (Jefferson Papers)
American Philosophical Society; members of [index entry]
5Thomas P. Jones to Thomas Jefferson, 5 March 1821 (Jefferson Papers)
American Philosophical Society; members of [index entry]
6Timothy Pickering to Thomas Jefferson, 12 February 1821 (Jefferson Papers)
American Philosophical Society; members of [index entry]
7Thomas Jefferson to Isaiah Thomas, 14 October 1820 (Jefferson Papers)
American Philosophical Society; members of [index entry]
8Thomas Jefferson to Tench Coxe, 13 October 1820 (Jefferson Papers)
American Philosophical Society; members of [index entry]
9Peter S. Du Ponceau to Thomas Jefferson, 9 October 1820 (Jefferson Papers)
American Philosophical Society; members of [index entry]
10John Sanderson to Thomas Jefferson, 19 August 1820 (Jefferson Papers)
American Philosophical Society; members of [index entry]