character - Doc (voice) (archive footage)

character - Self

character - Salesman

character - Dick Saunders

character - Senator Sam H. Smiley

character - Mr. Pippensigal

character - Arthur Sidney

character - Professor Kockerthaler

character - Bearded Man on Ship (uncredited)

character - Doc (voice) (uncredited)

character - Vale

character - Professor Washburn

character - Julius Vandergulder

character - Jake Eben

character - Himself

character - Jerry Sidon

character - Arthur Tirrey - Casting Director

character - Winston Gates

character - Harkness Boyd

character - Jim Conwell