Ralph Whittaker - CIA Director
Guthrie
Prescott
Cal Newkirk
William Henry Cameron
Mike Lamont
Amos Wetherall
Dr. Harold Malcolm
Marty Treleavan
Sheriff Mossman
The Major
Dave Mannering
Joe Lean
Jonas Cord Senior
Bill Cutler
Gen. Hewitt
Sam Barbee
Granville 'Granny' Dix
Harry Hutton
Eddie Turnbill
Louis Morel
Charlie Boyle
Bill Reynolds
Lou Glover
George Ballard
Glover
Edgar Blevins
Sam (as Lief Erickson)
Kalmani
Mr. George MacLean
Richards
Father Provincial aka Ed
Bob Marshall
Sgt. Norbert 'Noisy' Jackson
Nicholas Reed
Feder
General aboard plane
Commander Lane
Marshal John Sutton
B. Frederick Linaker
Stranger
Pete
Bit Part (uncredited)
U.S. Marshal Martin Weatherby
Bill Chase
Big Mart
Fred Anderson Jr.
Dr. Bruce Gordon
Pringle
Dunois, Bastard of Orleans
Dr. Mason
Gordon
Fred Lord
Dr. Harold Matson
Beaumont
Steve Blake
Kamar (as Leif Erikson)
Laurie
Whaba
Johnny M. Coe
Bill Stone
Rodney 'Bo-Jo' Brown
Terry Prescott
Tommy Van Dusen
Narrator (voice)
Peter Cortlant
Johnny Simpkins
Bob Hayes
Howard Nelson
Paul Lachinski
Dr. Victor Quimby
Dick Winters
Tom Bolton
Glenn Kasedon
Curley Prentice (as Glenn Erikson)
Bill Ide (as Glen Erickson)
Lawrence (as Glenn Erickson)
