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

Bishop, Erin (1997). The Jarrot Mansion, a report. Illinois Historic Preservation Agency, Sites Division, Springfield, Illinois.

Danisi, Thomas C. and W. Raymond Wood (2004). "Lewis and Clark's Route Map: James MacKay's Map of the Missouri River." Western Historical Quarterly 35 (Spring 2004), p. 53-72. Western History Association.

Davis, James E. (1998). Frontier Illinois. Indiana University Press, Bloomington.

Gilman, Carolyn (2003). Lewis and Clark: Across the Divide. Smithsonian Books, Washington, in association with the Missouri Historical Society, St. Louis.

Hartley, Robert E. (2002). Lewis and Clark in the Illinois Country: The Little-told Story. Xlibris and Sniktau Publications, Westminster, Colorado.

Jackson, Donald, editor (1978). Letters of the Lewis and Clark Expedition. Second Edition. Volumes 1 and 2. University of Illinois Press, Urbana.

Johmann, Carol A. (2003). The Lewis and Clark Expedition. Williamson Publishing, Charlotte, Vermont. A Kaleidoscope Kids Book.

Milner, George R. (1998). The Cahokia Chiefdom: The Archaeology of a Mississippian Society. Smithsonian Press, Washington.

Moulton, Gary E., editor (1993 ed.). The Journals of the Lewis and Clark Expedition. 13 vols. University of Nebraska Press.

Ronda, James P. (1984). Lewis and Clark Among the Indians. University of Nebraska Press, Lincoln.

Wood, W. Raymond (2003). Prologue to Lewis & Clark: The Mackay and Evans Expedition. University of Oklahoma Press, Norman.

Ibid.(2001). An Atlas of Early Maps of the American Midwest: Part II. Illinois State Museum Scientific Papers, Vol. XXIX.

Web sites

Lewis and Clark Illinois Web site