Charles Coburn
Benjamin Franklin
Vance Beasley
Grampa Pennypacker
Hippocrates
Uncle George Clitterbern
Dr. John Fenner
Steamship Company Clerk
Guy Eliot
Dr. Tweed
Louis Hurst (1 episode)
Gardiner
Mayor Ed Johnson
Pa Harrington (1 episode)
Sir Francis Beekman
le Père Matthew William Burke
Oliver Oxley
Samuel Fulton / John Smith
Lord Walters
Alex Conway
Professor Brookfield
Mr. Burnside
Major Blair
Dr. John Corday
Professor Jason Hartley
General Michael O'Hara
Lieutenant Quincy
Beaver Greenway
Burton F. 'B.F.' Fulton
Sir Simon Flaquer
Harley Temple
Alexander Gow
Colonel Will Seaborn Effingham
Col. John Appleby
Robert Drexel Gow
Max Dreyfus
Nicolai Iiyitch
Jonathan Crandall Sr
William Smith
Professor Henry Holmes
Peter Stuyvesant
Rudyard Morley
Uncle Holman
Hugo Van Cleve
Charles Creighton
Benjamin Dingle
Stanley Menninger
William Fitzroy
Henry Gordon
John Pulham
Seton Mansley
Professor Drake
John P. Merrick/Thomas Higgins
'Colonel' Harrington
Dr. Karl Braun
Captain Abe Peabody
Dr. Johannes Hofer
General Powell
Joshua Mallon IV
Lord Tyce
Richard Walker
J. B. Merlin
Gardner Hubbard
Judge Joseph M. Doolittle
Dr. Hugo Waldersee
Captain Briggs
Dr. Finlay
Mr. Morgan
Dr. Charles Shingle
