1Pierre Samuel Du Pont de Nemours to Thomas Jefferson, [ca. 28 July 1810] (Jefferson Papers)
Embargo Act (1807); mentioned [index entry]
2Richard Rush to Thomas Jefferson, 12 August 1813 (Jefferson Papers)
Embargo Act (1807); mentioned [index entry]
3“Johannes Vonderpuff” to Thomas Jefferson, 1 October 1814 (Jefferson Papers)
Embargo Act (1807); mentioned [index entry]
4Roberts to James Madison, 1 September 1822, with Postscript to Thomas Jefferson (Jefferson Papers)
Embargo Act (1807); mentioned [index entry]