The film has Doc Holliday being shot to death in an ambush by Curly Bill Brocius shortly before the shootout at the O.K. Corral in Tombstone, Arizona, on October 26. 1881. In reality, Holliday died of consumption in Glenwood Springs, Colorado, on November 8, 1887.
Curly Bill Brocius is shown being shot to death by Doc Holliday's girlfriend--here called "Jerry", but whose real name was Mary Horony, aka "Big Nose Kate"--after he escaped from the shootout at the O.K. Corral. The fact is that Brocius, who was not at the gunfight, was killed by Wyatt Earp in the desert outside of Tombstone several days later.
The film has the gunfight at the O.K. Corral occurring at night, when in fact it happened at approximately 3:00 in the afternoon.
The famous gunfight at the O.K. Corral is shown as being between Wyatt Earp on one side and Curly Bill Brocius and several of his gunmen on the other side, in which everyone on Brocius' side was killed. The fact is that Earp was not alone, being accompanied by his brothers Morgan and Virgil and his friend Doc Holliday; Curly Bill Brocius was not at the gunfight; Ike Clanton and Billy Claiborne, two of the Earp factions' opponents, ran when the shooting started and survived the fight.
Wyatt Earp is shown killing at least four men by himself during the O.K. Corral gunfight; the fact is that only three people - Billy Clanton and brothers Frank and Tom McLaury - were killed in the fight, and at least one of them was killed by Doc Holliday.
The film is set in the period from 1877 to 1880, but three of the songs used were published in the late 1880s.