1Caspar Wistar to Thomas Jefferson, 9 October 1815 (Jefferson Papers)
language; Indian (American) [index entry]
2Thomas Jefferson to Peter Wilson, 20 January 1816 (Jefferson Papers)
language; Indian (American) [index entry]
3Thomas Jefferson to William Clark, 8 September 1816 (Jefferson Papers)
language; Indian (American) [index entry]
4William Clark to Thomas Jefferson, 10 October 1816 (Jefferson Papers)
language; Indian (American) [index entry]
5Peter S. Du Ponceau to Thomas Jefferson, 17 February 1817 (Jefferson Papers)
language; Indian (American) [index entry]
6John Vaughan to Thomas Jefferson, 18 June 1817 (Jefferson Papers)
language; Indian (American) [index entry]
7Thomas Jefferson to Peter S. Du Ponceau, 7 November 1817 (Jefferson Papers)
language; Indian (American) [index entry]
8Peter S. Du Ponceau to Thomas Jefferson, 5 December 1817 (Jefferson Papers)
language; Indian (American) [index entry]
9Peter S. Du Ponceau to Thomas Jefferson, 11 December 1817 (Jefferson Papers)
language; Indian (American) [index entry]
10Thomas Jefferson to Peter S. Du Ponceau, 30 December 1817 (Jefferson Papers)
language; Indian (American) [index entry]