1Samuel H. Smith to Thomas Jefferson, 22 March 1809 (Jefferson Papers)
American Philosophical Society; members of, foreign [index entry]
2Thomas Jefferson to Caspar Wistar, 31 March 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]
3William Davy and Others to Thomas Jefferson, 28 April 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]
4Robert Patterson to Thomas Jefferson, 10 May 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]
5John Vaughan to Thomas Jefferson, 19 August 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry] American Philosophical Society; members of
6Valentín de Foronda to Thomas Jefferson, 26 August 1809 (Jefferson Papers)
American Philosophical Society; members of, foreign [index entry]
7Thomas Jefferson to Robert Patterson, 31 August 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]
8Benjamin Smith Barton to Thomas Jefferson, 14 September 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]
9Thomas Jefferson to Robert Patterson, 1 October 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]
10Thomas T. Hewson to Thomas Jefferson, 20 October 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry]