Marshall Bradford

Judge Murdock

Doc Kemper

Dr. Matthias (uncredited)

District Attorney (uncredited)

Member of the Tribe

Dr. Randolph

Marshal Hunt

Mr. Porter (uncredited)

Mailman (uncredited)

U.S. Secretary Platt

Mr. Hillman

Academy Awards Attendee (uncredited)

O'Hanlon, Pinkerton Agent (uncredited)

Lowell

The Commissioner

Naturalists' Conference Chairman

First Explorer

Man Outside the Club (uncredited)

Mutate Council Leader

Sir Arthur

Dr. Pelham

Malcolm Smith [Ch. 10]

Mr. Creely (uncredited)

Dr. Graffner

Professor Krantz

Sam Foster

Ben Williams

Headwaiter (uncredited)

Parole Board Member (uncredited)

Farmer (uncredited)

Walt Beck

Senator (uncredited)

Paul Gordon

Sheriff Brice

Chief of Police (uncredited)

Professor Graftner