1Enclosure: Oliver Everett’s Advertisement for the Memoirs of the American Academy of Arts and Sciences, [ca. 22 April … (Jefferson Papers)
language; Indian (American) [index entry]
2Thomas Jefferson to John Pickering, 13 February 1822 (Jefferson Papers)
language; Indian (American) [index entry]
3John Pickering to Thomas Jefferson, 28 January 1822 (Jefferson Papers)
language; Indian (American) [index entry]
4Peter S. Du Ponceau to Thomas Jefferson, 14 December 1820 (Jefferson Papers)
language; Indian (American) [index entry]
5Peter S. Du Ponceau to Thomas Jefferson, 12 September 1820 (Jefferson Papers)
language; Indian (American) [index entry]
6Peter S. Du Ponceau to Thomas Jefferson, 18 July 1820 (Jefferson Papers)
language; Indian (American) [index entry]
7Peter S. Du Ponceau to Thomas Jefferson, 13 July 1820 (Jefferson Papers)
language; Indian (American) [index entry]
8Enclosure: Peter S. Du Ponceau’s Comparison of the Nottoway and Iroquois Languages, [ca. 13 July 1820] (Jefferson Papers)
language; Indian (American) [index entry]
9Peter S. Du Ponceau to Thomas Jefferson, 12 July 1820 (Jefferson Papers)
language; Indian (American) [index entry]
10Enclosure: Peter S. Du Ponceau’s Comparison of Indian Numerals, [ca. 12 July 1820] (Jefferson Papers)
language; Indian (American) [index entry]