1Archibald Robertson to Thomas Jefferson, 12 August 1817 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
2Archibald Robertson to Thomas Jefferson, 3 April 1816 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
3Archibald Robertson to Thomas Jefferson, 1 June 1815 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]