1Thomas Jefferson to Pierre Samuel Du Pont de Nemours, André Thoüin, and Bartelémy de Faujas-Saint Fond, 16 May 1809 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
2Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 28 June 1809 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
3Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 29 July 1809 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
4James Madison to Thomas Jefferson, 6 October 1809 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letter to J. Madison [index entry]
5Thomas Jefferson to James Madison, 9 October 1809 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letter to J. Madison [index entry]
6Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 15 April 1811 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
7Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 29 November-14 December 1813 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
8Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 28 February 1815 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
9Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 15 May 1815 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]
10Thomas Jefferson to Pierre Samuel Du Pont de Nemours, 6 June 1815 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; letters to [index entry]