Casts
John Logan Allen
Himself - Geographer
Stephen E. Ambrose
Himself - Historian
Gerard Baker
Himself - Mandan-Hidatsa
Kevin Conway
Patrick Gass
Erica Funkhouser
Herself - Writer
William Least Heat-Moon
Himself - Writer
Gene Jones
Joseph Whitehouse
Mylie Lawyer
Herself - Descendant of Twisted Hair
James P. Ronda
Himself - Historian
Murphy Guyer
William Clark (voice)
Hal Holbrook
Narrator (voice)
Sam Waterston
Thomas Jefferson (voice)
Adam Arkin
Merriwether Lewis (voice)
Matthew Broderick
John Ordway (voice)
Dayton Duncan
Himself - Writer