The Gunfight at the O.K Corral is a film [DVD GUN] from 1957 that stars Burt Lancaster and Kirk Douglas. But, did you realize that it is based, not on a work of fiction, but on a real incident that happened on this day in 1881 in Tombstone, Arizona. The Earp brothers, Virgil, Wyatt, and Morgan, along with gambler, Doc Holliday, attempted to disarm the Clanton and Mclaury brothers. A quick round of gunfire (reported to have lasted a mere 30 seconds) resulted in one Clanton, and two McLaury deaths, and two Earp brothers wounded. The story of the gunfight and subsequent trial, in which the Earps and Holliday were acquitted of murder, became a legendary story of the "Wild West."
Besides the movie, we have several novels that were inspired by the gunfight, including Mary Doria Russell's Epitaph: A Novel of the O.K. Corral [F RUS, also eBook and eAudiobook]. Epitaph is #2 in a series by Russell, book one is Doc [F RUS, also eBook and eAudiobook]>