1William Thornton to Thomas Jefferson, 27 June 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
2Thomas Jefferson to William Thornton, 23 July 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
3William Thornton to Thomas Jefferson, 2 August 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
4George Greer to Thomas Jefferson, 9 August 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
5Thomas Jefferson to Thomas Ritchie, 15 August 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
6Thomas Jefferson to William Thornton, 17 August 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
7Thomas Ritchie to Thomas Jefferson, 9 October 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
8William Thornton to Thomas Jefferson, 11 December 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
9Thomas Jefferson to William Thornton, 24 December 1814 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
10Thomas Jefferson to Charles W. Goldsborough, 9 February 1815 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
11Thomas Jefferson to William Thornton, 9 February 1815 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]
12Thomas Jefferson to Benjamin J. Campbell, 26 March 1816 (Jefferson Papers)
Clopper, Francis C.; patent agent [index entry]