21Thomas Jefferson to Patrick Gibson, 21 April 1818 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
22Thomas Jefferson to Patrick Gibson, 3 November 1818 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
23Patrick Gibson to Thomas Jefferson, 13 November 1818 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
24Thomas Jefferson to Patrick Gibson, 10 September 1819 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
25Bernard Peyton to Thomas Jefferson, 8 January 1821 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
26Thomas Jefferson to Archibald Robertson, 16 November 1821 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
27Thomas Jefferson to Bernard Peyton, 25 May 1822 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
28Bernard Peyton to Thomas Jefferson, 3 June 1822 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
29Thomas Jefferson to Bernard Peyton, 11 June 1822 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]
30Bernard Peyton to Thomas Jefferson, 1 July 1822 (Jefferson Papers)
Robertson, Archibald; TJ pays [index entry]