The Great Moment

William Thomas Green Morton

Elizabeth Morton

Professor John C. Warren

Eben Frost

Dr. Horace Wells

Dr. Charles T. Jackson

Vice-President of Medical Society

President Franklin Pierce

Dr. Heywood

Homer Quimby

Betty Morton

Judge Shipman

Dr. Dahlmeyer

First Dental Patient

Senator Borland

The Priest

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

Onlooker (uncredited)

Massachusetts Medical Society Man (uncredited)

Morton's Clinic Manager (uncredited)

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

Presidential Secretary (uncredited)