1Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 7 December 1815 (Jefferson Papers)
steamboats; in Va. [index entry]
2John Barnes to Thomas Jefferson, 17 July 1817 (Jefferson Papers)
steamboats; in Va. [index entry]
3Thomas A. Digges to Thomas Jefferson, 30 May 1818 (Jefferson Papers)
steamboats; in Va. [index entry]
4Thomas Jefferson to Joseph Miller, 30 January 1819 (Jefferson Papers)
steamboats; in Va. [index entry]
5Joseph Miller to Thomas Jefferson, 16 February 1819 (Jefferson Papers)
steamboats; in Va. [index entry]
6Robert Taylor to Thomas Jefferson, 13 March 1819 (Jefferson Papers)
steamboats; in Va. [index entry]
7Jerman Baker to Thomas Jefferson, 26 September 1820 (Jefferson Papers)
steamboats; in Va. [index entry]
8Joseph C. Cabell to Thomas Jefferson, 22 December 1820 (Jefferson Papers)
steamboats; in Va. [index entry]