as Prof. Warren
as Secretary of the Navy
as Rudolph Dimrose(1 ep)
as Tersh Jeterax
as Mr. Stillwell
as Dr. Witherton(1 ep)
as Dr. Henry L. Carlyle
as Lycon
as Adrian Benedict
as Bill Mowry(1 ep)
as Douglas Kilburn(1 ep)
as Dr. Wells(1 ep)
as Dr. Wells
as Self - Narrator (voice)
as Peter Selden(1 ep)
as Stanley Sidney(1 ep)
as James McCullough / Ralph Graham
as Reagan
as Major General Vanderlip
as Dr. Morris(1 ep)
as Dr. Bernard Fischer
as Dillon Brent(1 ep)
as Charley Potter
as David(1 ep)
as Reagan(1 ep)
as Jonathan Wilson
as Dr. Malcolm Couzzens
as Sherman Wadsworth
as Self - Nominee(1 ep)
as Doc(1 ep)
as Dr. Giffin(1 ep)
as Bert(1 ep)
as Father(1 ep)
as Dr. Brooks
as Charles Francis Adams(1 ep)
as Lycon(1 ep)
as Elliott Simpson(1 ep)
as Anthony Vickers
as Milo Bragg
as Timothy Bryant
as Arthur Evans
as Jameson
as Ted Darby
as Adam Stanton
as Blacky Franchot
as Napoleon Bonaparte (uncredited) (voice)
as Mr. Fred Tiflin
as Marchese Del Laudi
as Father Massieu, Joan's Bailiff
as Brig. Gen. Mel Gilbert
as Mac Taylor(1 ep)
as Senator Greet(1 ep)
as Cassius(1 ep)
as Hal Manning(1 ep)
as Nordlund(1 ep)
as Benedict Arnold(1 ep)
as Lincoln Venner(1 ep)
as Mr. Wallace Sanford
as Earl Huber aka Mathews
as Lt. Aleksa Petrovic, Mihailovitch's Aide
as Dr. Larry Forbes
as Edgar Allan Poe
as Henry Clay
as Tod Fenwick
as Dewey Roberts
as Bob Mallory
as Roger Chevis
as Dr. Morton
as Ed Shirley
as Lieut. Jerry Banning
as Dr. Joseph Goldberger
as Narrator / Tom Thumb's Father (voice) (uncredited)
as Gregory Lane
as Dr. John 'Jock' McWade
as Ned Morgan
as Joaquin Murrieta
as Dr. Semmelweis