1Thomas Jefferson to Bernard McMahon, 13 January 1810 (Jefferson Papers)
plants; specimens from Lewis and Clark Expedition [index entry]
2Thomas Jefferson to Benjamin Smith Barton, 6 October 1810 (Jefferson Papers)
plants; specimens from Lewis and Clark Expedition [index entry]
3Thomas Jefferson to Madame de Tessé, 8 December 1813 (Jefferson Papers)
plants; specimens from Lewis and Clark Expedition [index entry]
4Thomas Jefferson to André Thoüin, 14 December 1813 (Jefferson Papers)
plants; specimens from Lewis and Clark Expedition [index entry]
5Thomas Jefferson to José Corrêa da Serra, 26 April 1816 (Jefferson Papers)
plants; specimens from Lewis and Clark Expedition [index entry]
6Thomas Jefferson to John Wayles Eppes, 6 March 1817 (Jefferson Papers)
plants; specimens from Lewis and Clark Expedition [index entry]