Betts, Robert B.
'The writingest explorers of their time': New Estimates of the Number of Words in the Published Journals of the Lewis and Clark Expedition.
We Proceeded On
Clarke, Charles G.
The Men of the Lewis and Clark Expedition: A Biographical Roster of the Fifty-one Members and a Composite Diary of Their Activities from All Known Sources.
Arthur H. Clark
Cutright, Paul Russell.
A History of the Lewis and Clark Journals.
University of Oklahoma Press,
Jackson, Donald, ed.
Letters of the Lewis and Clark Expedition with Related Documents, 1783–1854.
2d ed. 2 vols.
University of Illinois Press,
Moulton, Gary E., ed.
Atlas of the Lewis and Clark Expedition.
Wheeler, Olin D.
The Trail of Lewis and Clark, 1804–1806.