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