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