1Peter S. Du Ponceau to Thomas Jefferson, 5 January 1818 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
2Peter S. Du Ponceau to Thomas Jefferson, 14 February 1818 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
3Thomas Jefferson to Peter S. Du Ponceau, 14 March [1819] (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
4Peter S. Du Ponceau to Thomas Jefferson, 8 February 1816 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
5Peter S. Du Ponceau to Thomas Jefferson, 24 February 1818 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
6Peter S. Du Ponceau to Thomas Jefferson, 6 January 1818 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
7Thomas Jefferson to Peter S. Du Ponceau, 17 January 1818 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
8Thomas Jefferson to Peter S. Du Ponceau, 19 February 1818 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
9Peter S. Du Ponceau to Thomas Jefferson, 5 December 1817 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]
10Peter S. Du Ponceau to Thomas Jefferson, 11 December 1817 (Jefferson Papers)
American Philosophical Society, Historical and Literary Committee; TJ sends works to [index entry]