21Thomas Jefferson to Archibald Thweatt, 19 February 1818 (Jefferson Papers)
Thweatt, Archibald; letters to [index entry]
22Thomas Jefferson to Archibald Thweatt, 19 January 1821 (Jefferson Papers)
Thweatt, Archibald; letters to [index entry]
23Thomas Jefferson to Archibald Thweatt, 13 May [1821] (Jefferson Papers)
Thweatt, Archibald; letters to [index entry]
24Enclosure: Spencer Roane to Archibald Thweatt, 11 December 1821 (Jefferson Papers)
Thweatt, Archibald; letters to, from S. Roane [index entry]
25Enclosure: Spencer Roane to Archibald Thweatt, 24 December 1821 (Jefferson Papers)
Thweatt, Archibald; letters to, from S. Roane [index entry]
26Thomas Jefferson to Archibald Thweatt, 24 December 1821 (Jefferson Papers)
Thweatt, Archibald; letters to [index entry]