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