They weren't born in Colorado and only Doc Holliday died in Colorado. However Doc Holliday, Bat Masterson and Wyatt Earp (whose lives were very closely intertwined) spent a considerable portion of their careers in Colorado. Bat and Doc were involved in the Royal Gorge Railroad War in 1878-79. Bat was a peace officer in Trinidad, Colorado. Wyatt and Doc came to Pueblo, Colorado just a few months after the gunfight at the O.K. Corral. Doc was arrested...