21Thomas Jefferson to John Vaughan, 3 September 1819 (Jefferson Papers)
Vaughan, John; letters to [index entry]
22Thomas Jefferson to John Vaughan, 14 February 1820 (Jefferson Papers)
Vaughan, John; letters to [index entry]
23Thomas Jefferson to John Vaughan, 15 February 1820 (Jefferson Papers)
Vaughan, John; letters to [index entry]
24Thomas Jefferson to John Vaughan, 8 March 1820 (Jefferson Papers)
Vaughan, John; letters to [index entry]
25Thomas Jefferson to John Vaughan, 12 March 1820 (Jefferson Papers)
Vaughan, John; letters to [index entry]
26Thomas Jefferson to John Vaughan, 9 April 1820 (Jefferson Papers)
Vaughan, John; letters to [index entry]
27Thomas Jefferson to John Vaughan, 24 April 1820 (Jefferson Papers)
Vaughan, John; letters to [index entry]