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