Cast
James Drury
Walter Powell
Ray Walker
McSpadden (uncredited)
Brian Keith
William Dunn
Ben Johnson
George Bradley
John Beal
Maj. John Wesley Powell
Stan Jones
Seneca Howland
David Stollery
Andrew 'Andy' Hall
R.G. Armstrong
Oramel Howland
L.Q. Jones
Billy Hawkins
David Frankham
Frank Goodman
Roy Barcroft
Jim Baker
Jack Big Head
Ashtishkel
Pat Hogan
Indian chief