I’ve been to Tombstone a few times, and I can attest to the realistic scenery. This is Hour of the Gun from 1967 and starring James Garner as Wyatt Earp, Jason Robards as Doc Holliday, and Robert Ryan as Ike Clanton. The screen shots are from Amazon Prime Video. Details are from Wikipedia.
Yes, this is about the Gunfight at the O.K. Corral, but the gunfight is only the beginning. Here we see the Earp brothers and Doc Holliday walking out to meet some of the Clanton gang in the streets of Tumbstone, 26 October 1881. There are five of the Clantons, including Billy Clanton, son of leader Ike Clanton. The four lawmen demand the Clanton people give up their weapons. The Clantons had a recent history of death threats toward the Earps.
The Clantons refuse to disarm, and they open fire. Holliday plus Virgil and Morgan Earp take hits, but after 30 seconds of firing three of the Clantons, including Billy Clanton, lie in the dust and never get up.
There is a power struggle in the town, that region of the country for that matter, with Ike Clanton hosting a collection of gunslingers to assist in opposing the onslaught of civilization. The four lawmen face trail for murder, but the judge decides they were acting within their duties as law officers, and therefore there was not crime.
Ike Clanton is not satisfied, and he launches a campaign of vengeance. First Virgil Earp is shot from ambush in the streets of the town. He survives as a cripple.
There is an election for a new city sheriff, and Morgan Earp is winning it, but a shotgun blast through the pool hall door kills him. His opposition in the election, Pete Spence (Michael Tolan) is given the job. Now it’s Wyatt who’s on a mission for revenge.
Wyatt takes his brother’s body to Tucson by train, and Clanton’s men follow. A planned ambush at the train station goes badly, and two of the Clanton assassins are killed by Wyatt and Doc.
Clanton’s gang begins to disintegrate. Clanton dismisses Spence and orders him to leave the area. Spence and others rob a stage coach for the mine payroll and kill three. Wyatt tracks Spence down and catches him with some of the loot. He notices Spence’s shotgun is nearby, and he turns his back for a moment. Spence seizes the opportunity and blazes away. But Wyatt has set him up, and he ducks behind a doorway, emerging to waste him with a volley from his pistol.
A similar fate awaits another ex-Clanton gangster. Wyatt elicits his confession to complicity in the shootings of his brothers and allows the man to go for his pistol before shooting him multiple times.
Meanwhile, Doc, suffering from tuberculosis, goes to Colorado for convalescence. He and Wyatt make the trip twice, and on the second trip Doc remains there to die.
Wyatt traces Ike to Mexico, where his gang is caught stealing cattle. The Mexican Federales are unable to prosecute Ike after their two witnesses, Clanton gang members, are murdered in their jail cells. Wyatt finally confronts Ike in a church courtyard and waits for him to go for his gun before killing him.
Wyatt leaves Arizona and never returns.
So, that was all about 137 years ago this month, plus some. Obviously the story begins on 26 October 1881 and goes forward from there. Despite the promise of the opening credits, little of the movie matches written records. In fact, few of the written records match anything. For example, I can find no record that Wyatt Earp killed Ike Clanton:
Clanton and his brother Phineas were charged with cattle-rustling and pursued by detective Jonas V. Brighton. On June 1, 1887, at Jim Wilson’s Ranch on Eagle Creek, south of Springerville, Arizona, Phin Clanton surrendered, but Ike resisted and was shot dead.
The Gunfight at the O.K. Corral is the most notorious of the Old West shootouts, but it was hardly known until 1931, two years after Wyatt died. Wyatt Earp retired with his family to Los Angeles, where he cavorted with western movie actors.
This came out the year after Garner made a big splash as a race car driver in Grand Prix.