Despite having appeared in and been credited in 10 earlier productions, Steve McQueen is credited at the end as Introducing Steve McQueen.
There is no town called Vinegar Wells in Texas where Longley was born and hung. The town where he was finally jailed and hung is called Giddings Texas and the jail cell that held him is on public display downtown in a small city park, he is buried in a cemetery in town.
Bill Longley was the same name as the character played by Rory Calhoun in the western series "The Texan". That series began the same year as this episode in 1958. Although not an outlaw Calhoun's character was also from Texas.
Bill Longley was a real outlaw who was hanged for murder as stated in the narrative. He claimed to have killed 32 people.