1John Barnes to Thomas Jefferson, 14 February 1810 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
2John Barnes to Thomas Jefferson, 3 April 1811 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
3John Barnes to Thomas Jefferson, 15 April 1811 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
4Thomas Jefferson to John Barnes, 29 June 1811 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
5John Barnes to Thomas Jefferson, 15 January 1812 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
6John Barnes to Thomas Jefferson, 22 June 1814 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
7Enclosure: Tadeusz Kosciuszko’s Account with John Barnes, 22 June 1814 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
8John Barnes to Thomas Jefferson, 27 June 1814 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
9Thomas Jefferson to Baring Brothers & Company, 28 June 1814 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]
10Thomas Jefferson to Tadeusz Kosciuszko, 28 June 1814 (Jefferson Papers)
Bowie & Kurtz (Georgetown firm) [index entry]