1Thomas Jefferson to Thomas Appleton, 6 March 1815 (Jefferson Papers)
Pennsylvania, University of [index entry]
2Thomas Jefferson to Joseph C. Cabell, 1 March 1819 (Jefferson Papers)
Pennsylvania, University of [index entry]
3Thomas Jefferson to Stephen Cathalan, 6 March 1815 (Jefferson Papers)
Pennsylvania, University of [index entry]
4Thomas Jefferson to Thomas Cooper, 11 April 1818 (Jefferson Papers)
Pennsylvania, University of [index entry]
5Thomas Jefferson to Thomas Cooper, 7 August 1818 (Jefferson Papers)
Pennsylvania, University of [index entry]
6Thomas Jefferson to Thomas Cooper, 6 February 1818 (Jefferson Papers)
Pennsylvania, University of [index entry]
7Thomas Jefferson to Thomas Cooper, 25 November 1817 (Jefferson Papers)
Pennsylvania, University of [index entry]
8Thomas Jefferson to José Corrêa da Serra, 25 November 1817 (Jefferson Papers)
Pennsylvania, University of [index entry]
9Thomas Jefferson to William H. Crawford, 6 March 1815 (Jefferson Papers)
Pennsylvania, University of [index entry]
10Thomas Jefferson to Antonio Dugnani, 7 March 1815 (Jefferson Papers)
Pennsylvania, University of [index entry]