On This Day In History July 19, 1879: Doc Holliday kills for the first time Doc Holliday commits his first murder, killing a man for shooting up his New Mexico saloon. Despite his formidable reputation as a deadly gunslinger, Doc Holliday only engaged in eight shootouts during his life, and it has only been verified that he killed two men. Still, the smartly dressed ex-dentist from Atlanta had a remarkably fearless attitude toward death and danger, perhaps because he was slowly dying from tuberculosis. In 1879, Holliday settled in Las Vegas, New Mexico, where he opened a saloon with a...