1Thomas Jefferson to Archibald Robertson, 28 March 1816 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
2Thomas Jefferson to Archibald Robertson, 27 August 1813 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
3Thomas Jefferson to Archibald Robertson, 12 December 1815 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
4Thomas Jefferson to Archibald Robertson, 1 June 1815 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
5Thomas Jefferson to Archibald Robertson, 29 September 1815 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]