1Thomas Jefferson to John Armstrong, 20 March 1818 (Jefferson Papers)
Kosciuszko, Tadeusz (Thaddeus) Andrzej Bonawentura; death of [index entry]
2Thomas Jefferson to John Armstrong, 14 March 1819 (Jefferson Papers)
Kosciuszko, Tadeusz (Thaddeus) Andrzej Bonawentura; death of [index entry]