1Thomas Jefferson to Paul Allen, 5 August 1813 (Jefferson Papers)
Biddle, Nicholas; and history of Lewis and Clark Expedition [index entry]
2Thomas Jefferson to Paul Allen, 20 August 1813 (Jefferson Papers)
Biddle, Nicholas; and history of Lewis and Clark Expedition [index entry]
3Thomas Jefferson to Nicholas Biddle, 20 August 1813 (Jefferson Papers)
Biddle, Nicholas; and history of Lewis and Clark Expedition [index entry]