1Peter S. Du Ponceau to Thomas Jefferson, 17 February 1817 (Jefferson Papers)
Indians, American; Delaware [index entry]
2Thomas Jefferson to Peter S. Du Ponceau, 30 December 1817 (Jefferson Papers)
Indians, American; Delaware [index entry]
3Peter S. Du Ponceau to Thomas Jefferson, 22 January 1818 (Jefferson Papers)
Indians, American; Delaware [index entry]
4Enclosure: Prospectus for Transactions of the Historical and Literary Committee of the American Philosophical Society … (Jefferson Papers)
Indians, American; Delaware [index entry]
5Enclosure: Edy Turner’s Vocabulary of the Nottoway Language, 4 March 1820 (Jefferson Papers)
Indians, American; Delaware [index entry]
6Peter S. Du Ponceau to Thomas Jefferson, 12 July 1820 (Jefferson Papers)
Indians, American; Delaware [index entry]
7Enclosure: Peter S. Du Ponceau’s Comparison of Indian Numerals, [ca. 12 July 1820] (Jefferson Papers)
Indians, American; Delaware [index entry]
8Peter S. Du Ponceau to Thomas Jefferson, 18 July 1820 (Jefferson Papers)
Indians, American; Delaware [index entry]
9Peter S. Du Ponceau to Thomas Jefferson, 12 September 1820 (Jefferson Papers)
Indians, American; Delaware [index entry]
10Jane Battles to Ann Carrington Cabell, with Postscript to Thomas Jefferson, 19 November 1820 (Jefferson Papers)
Indians, American; Delaware [index entry]