1David Bailie Warden to Thomas Jefferson, 19 January 1810 (Jefferson Papers)
2Thomas Jefferson to Carlo Botta, 15 July 1810 (Jefferson Papers)
3Thomas Jefferson to David Bailie Warden, 15 July 1810 (Jefferson Papers)
4John R. Fenwick to Thomas Jefferson, 18 August 1810 (Jefferson Papers)
5Thomas Jefferson to John R. Fenwick, 18 September 1810 (Jefferson Papers)
6Thomas Jefferson to Louis H. Girardin, 28 August 1814 (Jefferson Papers)
7John Adams to Thomas Jefferson, 30 July 1815 (Jefferson Papers)
8Thomas Jefferson to John Adams, 10 August 1815 (Jefferson Papers)
9Carlo Botta to Thomas Jefferson, 29 November 1815 (Jefferson Papers)
10Carlo Botta to Thomas Jefferson, 10 January 1816 (Jefferson Papers)