1John Armstrong to Thomas Jefferson, 4 January 1818 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
2Thomas Jefferson to John Armstrong, 17 January 1818 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
3Thomas Jefferson to John Armstrong, 20 March 1818 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
4John Barnes to Thomas Jefferson, 1 February 1819 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
5John Barnes to Thomas Jefferson, 26 February 1819 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
6John Armstrong to Thomas Jefferson, 1 March 1819 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
7Thomas Jefferson to John Armstrong, 14 March 1819 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
8Thomas Jefferson to John Barnes, 14 March 1819 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
9Thomas Jefferson to Pierre de Polética, 12 June [1819] (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]
10Thomas Jefferson to William Wirt, 27 June 1819 (Jefferson Papers)
Armstrong, John; and T. Kosciuszko’s estate [index entry]