Trivia

When the fight appeared in the newspapers it was referred to as “Street-fight in Tombstone”.
--Source: Inventing Wyatt Earp: His Life and Many Legends, Page 388

Burt Lancaster agreed to do this film if he could star in The Rainmaker (1956), also produced by Hal B. Wallis.

Much of this film was shot at the famous "Old Tucson" facility, not far from the real Tombstone. However, its "town street" set was used surprisingly as Fort Griffin, Texas, in the opening reels, while later Tombstone street scenes were shot in southern California, on the same Paramount Ranch set that was later used as Virginia City, Nevada, on TV's "Bonanza" (1959).

In July 1957, this film was released to many drive-in theaters on a double bill with Destination 60,000 (1957).

This was the second of seven films that Kirk Douglas and Burt Lancaster made together.

The actual gunfight took place on 26 October 1881 and lasted a mere 30 seconds, resulting in three dead men after an exchange of 34 bullets. Compared to this adaptation, the movie gunfight took 4 days to film and produced an on-screen bloodbath that lasted 5 minutes.

Dennis Hopper, who plays Billy Clanton, was born and raised in Dodge City, Kansas, where Wyatt Earp was once sheriff.

Wyatt Earp and his wife Josephine settled in Los Angeles when he was in his 60s, and he spent a lot of time hanging around movie sets, trying to convince someone to film his then nearly forgotten story.
--Source: Wyatt Earp, Page 1907