as Chief of Police (uncredited)
as Man Outside the Club (uncredited)
as Farmer (uncredited)
as The Commissioner
as Senator (uncredited)
as Member of the Tribe
as Parole Board Member (uncredited)
as Walt Beck
as O'Hanlon, Pinkerton Agent (uncredited)
as Academy Awards Attendee (uncredited)
as Mailman (uncredited)
as Mutate Council Leader
as U.S. Secretary Platt
as Professor Krantz
as Malcolm Smith [Ch. 10]
as Mr. Creely (uncredited)
as Dr. Matthias (uncredited)
as Naturalists' Conference Chairman
as District Attorney (uncredited)
as Headwaiter (uncredited)
as Paul Gordon
as Mr. Hillman
as Dr. Graffner
as Professor Graftner
as Ben Williams
as Sam Foster
as Dr. Pelham
as Mr. Porter (uncredited)
as Lowell
as Dr. Randolph
as Doc Kemper
as Marshal Hunt
as Judge Murdock
as Sir Arthur
as First Explorer
