1Thomas Jefferson to James Madison, 9 October 1809 (Jefferson Papers)
Fredericksburg, Va.; J. Benson (postmaster) [index entry]
2Isaac A. Coles to Thomas Jefferson, 12 November 1809 (Jefferson Papers)
Fredericksburg, Va.; J. Benson (postmaster) [index entry]
3Thomas Jefferson to John Vaughan, 25 May 1812 (Jefferson Papers)
Fredericksburg, Va.; J. Benson (postmaster) [index entry]
4John Vaughan to Thomas Jefferson, 8 June 1812 (Jefferson Papers)
Fredericksburg, Va.; J. Benson (postmaster) [index entry]