1Pierre Samuel Du Pont de Nemours to Thomas Jefferson, [ca. 28 July 1810] (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; on national defense [index entry]
2Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 14 September 1810 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; on national defense [index entry]
3Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 12 December 1811 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; on national defense [index entry]
4Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 25 January 1812 (Jefferson Papers)
Du Pont de Nemours, Pierre Samuel; on national defense [index entry]