Discover
Fred MacMurray
Cpt. Meriwether Lewis
Charlton Heston
Lt. William Clark
Donna Reed
Sacajawea
Barbara Hale
Julia Hancock
William Demarest
Sgt. Gass
Alan Reed
Charbonneau
Eduardo Noriega
Chief Cameahwait
Larry Pennell
Wild Eagle
Herbert Heyes
President Thomas Jefferson
Lester Matthews
Mr. Hancock
Argentina Brunetti
Shoshone Woman (uncredited)
Julia Montoya
Crow Woman (uncredited)
Ralph Moody
Chief Le Borgne (uncredited)
William Phipps
Night Camp Sentry (uncredited)
Walter Reed
Helmsman Cruzatte (uncredited)
Bill Walker
Tom (uncredited)
Helen Wallace
Mrs. Martha Hancock (uncredited)
Art
Sam Comer
Set Decoration
A. Earl Hedrick
Art Direction
Hal Pereira
Art Direction
Otto Siegel
Set Decoration
Directing
Rudolph Maté
Director
Charles C. Coleman
Second Unit Director
William McGarry
Assistant Director
Editing
Frank Bracht
Editor
Sound
Hans J. Salter
Original Music Composer
Gene Merritt
Sound Recordist
Gene Garvin
Sound Recordist
Art
Sam Comer
Set Decoration
A. Earl Hedrick
Art Direction
Hal Pereira
Art Direction
Otto Siegel
Set Decoration
Directing
Rudolph Maté
Director
Charles C. Coleman
Second Unit Director
William McGarry
Assistant Director
Editing
Frank Bracht
Editor
Sound
Hans J. Salter
Original Music Composer
Gene Merritt
Sound Recordist
Gene Garvin
Sound Recordist