The Great Moment

Joel McCrea

William Thomas Green Morton

Betty Field

Elizabeth Morton

Harry Carey

Professor John C. Warren

William Demarest

Eben Frost

Louis Jean Heydt

Dr. Horace Wells

Julius Tannen

Dr. Charles T. Jackson

Edwin Maxwell

Vice-President of Medical Society

Porter Hall

President Franklin Pierce

Franklin Pangborn

Dr. Heywood

Grady Sutton

Homer Quimby

Donivee Lee

Betty Morton

Harry Hayden

Judge Shipman

Torben Meyer

Dr. Dahlmeyer

Victor Potel

First Dental Patient

Thurston Hall

Senator Borland

J. Farrell MacDonald

The Priest

Roscoe Ates

Morton's Sign Painter - replaced by Hank Worden (uncredited)

Hank Bell

Onlooker (uncredited)

Franklyn Farnum

Massachusetts Medical Society Man (uncredited)

Byron Foulger

Morton's Clinic Manager (uncredited)

Hank Worden

Morton's Sign Painter - replaced Roscoe Ates (uncredited)

Arthur Hoyt

Presidential Secretary (uncredited)