Marshall Bradford

as Doc Kemper

as Dr. Matthias (uncredited)

as Member of the Tribe

as District Attorney (uncredited)

as Dr. Randolph

as Mr. Porter (uncredited)

as Mailman (uncredited)

as U.S. Secretary Platt

as Academy Awards Attendee (uncredited)

as O'Hanlon, Pinkerton Agent (uncredited)

as Mr. Hillman

as Lowell

as The Commissioner

as Naturalists' Conference Chairman

as Mr. Creely (uncredited)

as Dr. Pelham

as Man Outside the Club (uncredited)

as Malcolm Smith [Ch. 10]

as Mutate Council Leader

as Dr. Graffner

as Sam Foster

as Ben Williams

as Professor Krantz

as Farmer (uncredited)

as Walt Beck

as Parole Board Member (uncredited)

as Headwaiter (uncredited)

as Chief of Police (uncredited)

as Senator (uncredited)

as Paul Gordon

as Professor Graftner

as Judge Murdock

as Marshal Hunt

as First Explorer

as Sir Arthur

as Sheriff Brice