Virgil arranges the gunfight for dawn, but in reality it took place at around 3 pm.
Johnny Ringo was not killed in the gunfight, nor did he take part.
Wyatt Earp is portrayed as being Tombstone's local Marshal in the week leading up to the gun battle of October 26, 1881. His brother Virgil is shown rushing to town to help him on that fateful day. In fact, Virgil was the town Marshal, with younger brother Morgan as deputy. Wyatt, a saloon keeper, was deputized as an emergency measure while the brothers were walking to the site of the battle.
The Earps and Clantons all sport six-shooter revolvers during their showdown. Dozens of shots are fired, but no one ever reloads.
In the teaser for next week's adventure The Savages: Episode 1 (1966), "Savages" was misspelled "Savaes". This was corrected in the 2014 computer-enhanced remastered version syndicated by BBC.
In a low-angle shot during the shootout, the upper edge of the "sky" backdrop is visible, revealing part of the studio ceiling.
Doc Holliday's common law wife Kate speaks with an exaggerated American accent, but probably really spoke with a Hungarian accent.