1Peter S. Du Ponceau to Thomas Jefferson, 11 December 1817 (Jefferson Papers)
American Philosophical Society; members of [index entry]
2Thomas Jefferson to Antonio Dugnani, 14 February 1818 (Jefferson Papers)
American Philosophical Society; members of [index entry]
3William S. Jacobs to Thomas Jefferson, 3 July 1818 (Jefferson Papers)
American Philosophical Society; members of [index entry]
4Gerard Troost to Thomas Jefferson, 21 July 1818 (Jefferson Papers)
American Philosophical Society; members of [index entry]
5Julius T. Ducatel to Thomas Jefferson, 3 August 1818 (Jefferson Papers)
American Philosophical Society; members of [index entry]
6John Stevens to Thomas Jefferson, 7 November 1818 (Jefferson Papers)
American Philosophical Society; members of [index entry]
7Thomas Jefferson to Dugald Stewart, 21 December 1818 (Jefferson Papers)
American Philosophical Society; members of, foreign [index entry]
8Simeon DeWitt to Thomas Jefferson, 13 January 1819 (Jefferson Papers)
American Philosophical Society; members of [index entry]
9Letter of Recommendation for Richard Ware from James C. Fisher, Edward Burd, John Vaughan, and John Read, 17 March 1819 (Jefferson Papers)
American Philosophical Society; members of [index entry]
10Petty Vaughan to Thomas Jefferson, 29 March 1819 (Jefferson Papers)
American Philosophical Society; members of [index entry]