1David Bailie Warden to Thomas Jefferson, 24 July 1811 (Jefferson Papers)
2Destutt de Tracy to Thomas Jefferson, 21 October 1811 (Jefferson Papers)
3Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 25 January 1812 (Jefferson Papers)
4Lafayette to Thomas Jefferson, 21 January 1816 (Jefferson Papers)
5Thomas Jefferson to Nicolas G. Dufief, 17 May 1816 (Jefferson Papers)
6Thomas Jefferson to Lafayette, 17 May 1816 (Jefferson Papers)
7Nicolas G. Dufief to Thomas Jefferson, 27 May 1816 (Jefferson Papers)
8Albert Gallatin to Thomas Jefferson, 7 June 1816 (Jefferson Papers)
9Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 3 August 1816 (Jefferson Papers)
10Lafayette to Thomas Jefferson, 10 December 1817 (Jefferson Papers)