1Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 25 January 1812 (Jefferson Papers)
2Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 14 April 1812 (Jefferson Papers)
3Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 17 May 1812 (Jefferson Papers)
4Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 10 February 1813 (Jefferson Papers)
5Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 8 September 1813 (Jefferson Papers)
6Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 18 August 1816 (Jefferson Papers)