1Thomas Jefferson to John Vaughan, 2 August 1817 (Jefferson Papers)
Appleton, Thomas; and P. Mazzei’s estate [index entry]
2Thomas Jefferson to John Vaughan, 7 December 1818 (Jefferson Papers)
Appleton, Thomas; and P. Mazzei’s estate [index entry]
3Thomas Jefferson to John Vaughan, 28 May 1819 (Jefferson Papers)
Appleton, Thomas; and P. Mazzei’s estate [index entry]