1Thomas A. Digges to Thomas Jefferson, 11 September 1809 (Jefferson Papers)
fort Warburton, later Fort Washington
2John Wayles Eppes to Thomas Jefferson, 21 July 1813 (Jefferson Papers)
Fort Warburton (later Fort Washington) [index entry]
3James Monroe to Thomas Jefferson, 21 December 1814 (Jefferson Papers)
Fort Warburton (later Fort Washington) [index entry]
4Thomas A. Digges to Thomas Jefferson, 30 May 1818 (Jefferson Papers)
Fort Warburton (later Fort Washington) [index entry]