1Thomas Appleton to Thomas Jefferson, 26 December 1814 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
2James Monroe to Thomas Jefferson, [22] January 1816 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
3Thomas Jefferson to William Short, 7 April 1816 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
4William Short to Thomas Jefferson, 7 May 1816 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
5Peter Poinsot to Thomas Jefferson, 25 June 1817 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
6William Short to Thomas Jefferson, 12 November 1817 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
7Peter Poinsot to Thomas Jefferson, 18 May 1818 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
8Stephen Cathalan to Thomas Jefferson, 7 September 1818 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
9Peter Poinsot to Thomas Jefferson, 12 September 1818 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
10Peter Poinsot to Thomas Jefferson, 2 March 1819 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
11Peter Poinsot to Thomas Jefferson, 6 June 1819 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]
12Marc Antoine Jullien to Thomas Jefferson, 10 July 1821 (Jefferson Papers)
Barnet, Isaac Cox; as consul [index entry]