The characters and story were created by the American short story author O. Henry in "The Caballero's Way", published in 1907 in the collection "Heart of the West".
The characters and story were created by the American short story author O. Henry, pen name of William Sidney Porter. The Cisco Kid character is taken from O. Henry's "The Caballero's Way", published in 1907 in the collection "Heart of the West".