1Thomas Jefferson to James Madison, 17 August 1809 (Jefferson Papers)
Erskine, David M.; agreement with U.S. [index entry]
2Thomas Jefferson to Joseph McCoy, 6 September 1809 (Jefferson Papers)
Erskine, David M.; agreement with U.S. [index entry]
3Thomas Jefferson to James Madison, 26 November 1809 (Jefferson Papers)
Erskine, David M.; agreement with U.S. [index entry]