1Thomas Jefferson to José Corrêa da Serra, 26 April 1816 (Jefferson Papers)
maps; of Lewis and Clark Expedition [index entry]
2Thomas Jefferson to William Clark, 8 September 1816 (Jefferson Papers)
maps; of Lewis and Clark Expedition [index entry]
3Montlezun’s Account of a Visit to Monticello, 20 September 1816 (Jefferson Papers)
maps; of Lewis and Clark Expedition [index entry]
4William Clark to Thomas Jefferson, 10 October 1816 (Jefferson Papers)
maps; of Lewis and Clark Expedition [index entry]
5Thomas Jefferson to Peter S. Du Ponceau, 7 November 1817 (Jefferson Papers)
maps; of Lewis and Clark Expedition [index entry]
6Peter S. Du Ponceau to Thomas Jefferson, 14 February 1818 (Jefferson Papers)
maps; of Lewis and Clark Expedition [index entry]
7Enclosure: Nicholas Biddle to William Tilghman, 6 April 1818 (Jefferson Papers)
Hassler, Ferdinand Rudolph; and map of Lewis and Clark Expedition [index entry]