Like many fictionalized portrayals of the shootout, this episode shows the gunfight at the O.K. Corral, when in fact it occurred six doors down in a lot as well on Fremont Street. It also shows Billy Claiborne and Ike Clanton as armed, when most historical accounts agree that they were not.
In the end credits, Virgil Earp's name is miscapitalized "Virgil earp."
Shotgun Gibbs' name is misspelled Shogun Gibbs in the end credits.
The end credits of the episode in syndicated are from the season 1 episode "Bat Masterson Again."
During the fight scene outside the doctor's office, it is obvious that it is not Hugh O'Brian doing the fighting but his stunt double since the double's face can clearly be seen throughout most of the scene.
When Hammer robs Limestone Barker at his shack, he calls him "Langston."