1Patrick Gibson to Thomas Jefferson, 5 July 1815 (Jefferson Papers)
Vaughan, John; account with TJ [index entry]
2Patrick Gibson to Thomas Jefferson, 1 May 1817 (Jefferson Papers)
Vaughan, John; account with TJ [index entry]
3Patrick Gibson to Thomas Jefferson, 28 May 1817 (Jefferson Papers)
Vaughan, John; account with TJ [index entry]
4Patrick Gibson to Thomas Jefferson, 4 May 1818 (Jefferson Papers)
Vaughan, John; account with TJ [index entry]