1Thomas Jefferson to John Barnes, 26 February 1810 (Jefferson Papers)
Kosciuszko, Tadeusz (Thaddeus) Andrzej Bonawentura; letters to mentioned [index entry]
2Thomas Jefferson to David Bailie Warden, 8 July 1811 (Jefferson Papers)
Kosciuszko, Tadeusz (Thaddeus) Andrzej Bonawentura; letters to mentioned [index entry]
3Thomas Jefferson to John Barnes, 28 June 1814 (Jefferson Papers)
Kosciuszko, Tadeusz (Thaddeus) Andrzej Bonawentura; letters to mentioned [index entry]