Ambrose, Stephen E.  Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West.  New York: Simon & Schuster, 1996.

Anderson, Irving W.  "The History of the Lewis and Clark Expedition."  [electronic document] Great Falls, Montana: Lewis and Clark Trail Heritage Foundation, Inc., accessed 8 August 2002.  Available from http://www.lewisandclark.org/; Internet.

Carter, Edward C. II, ed.  Three Journals of the Lewis and Clark Expedition, 1804 - 1806:  From the Collections of the American Philosophical Society.  Facsim. ed.  Philadelphia: American Philosophical Society, 2000.

Cutright, Paul Russell.  "Contributions of  Philadelphia to Lewis and Clark History."  We Proceeded On.  Special WPO publication no. 6 (July 1982): 1 - 44.

Duncan, Dayton, and Ken Burns.  Lewis and Clark: The Journey of the Corps of Discovery, an Illustrated History.  New York: Alfred A. Knopf, 1997.

Holmberg, James J., ed.  Dear Brother: Letters of William Clark to Jonathan Clark.  New Haven: Yale University Press, 2002.

Jackson, Donald Dean, ed.  Letters of the Lewis and Clark Expedition, with Related Documents, 1783 - 1854.  2nd ed. with additional documents and notes.  2 vols.  Urbana and Chicago: University of Illinois Press, 1978.

______. Thomas Jefferson and the Stony Mountains: Exploring the West from Monticello.  Urbana: University of Illinois Press, 1981.

Jones, Landon Y., ed.  The Essential Lewis and Clark: Original Journals of the Lewis and Clark Expedition.  Selections.  New York: Ecco Press, 2000.

______. "Iron Will."  Smithsonian 33 (August 2002): 96 - 107.

Moulton, Gary E., ed.  The Journals of the Lewis and Clark Expedition.  13 vols.  Lincoln: University of Nebraska Press, 1979 - 2001.

______. The Lewis and Clark Journals: An Epic of Discovery.  The abridgement of the Definitive Nebraska Edition.  Lincoln and London: University of Nebraska Press, 2003.

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Bibliography