as Doc (voice) (uncredited)
as Doc (voice) (archive footage)
as Mr. Pippensigal
as Bearded Man on Ship (uncredited)
as Salesman
as Arthur Tirrey - Casting Director
as Arthur Sidney
as Professor Washburn
as Dick Saunders
as Senator Sam H. Smiley
as Professor Kockerthaler
as Vale
as Jerry Sidon
as Marmaduke Grubb
as Jim Conwell
as Harkness Boyd
as Winston Gates
