1Edward Bancroft to Thomas Jefferson, 5 September 1815 (Jefferson Papers)
2Philip I. Barziza to Thomas Jefferson, 2 February 1822 (Jefferson Papers)
3Thomas Jefferson to Jerman Baker and Archibald Thweatt, 1 January 1817 (Jefferson Papers)
4Thomas Jefferson to Joseph C. Cabell, 1 January 1817 (Jefferson Papers)
5Thomas Jefferson to Philip I. Barziza, 24 February 1817 (Jefferson Papers)