1Paul Allen to Thomas Jefferson, 18 August 1813 (Jefferson Papers)
Allen, Paul; and N. Biddle’s history of the Lewis and Clark Expedition [index entry]
2Nicholas Biddle to Thomas Jefferson, 28 September 1813 (Jefferson Papers)
Allen, Paul; and N. Biddle’s history of the Lewis and Clark Expedition [index entry]
3Paul Allen to Thomas Jefferson, 18 December 1813 (Jefferson Papers)
Allen, Paul; and N. Biddle’s history of the Lewis and Clark Expedition [index entry]
4Bradford & Inskeep to Thomas Jefferson, 12 April 1814 (Jefferson Papers)
Allen, Paul; and N. Biddle’s history of the Lewis and Clark Expedition [index entry]
5Charles Thomson to Thomas Jefferson, 16 May 1816 (Jefferson Papers)
Allen, Paul; and N. Biddle’s history of the Lewis and Clark Expedition [index entry]