Actor Thomas Gomez appeared posthumously in this episode. He was injured in a car accident in May 1971 and was in a coma for about three weeks before passing away on June 18, 1971, almost seven months before this episode first aired.
The English voices for the Mexican boy, Lucho, and his grandfather are dubbed, possibly because the actors' accents were too heavy. The boy's voice sounds worse, more like a cartoon character, or like the English voices dubbed in Chinese martial arts moves of that time period.
This story line is similar to an earlier Gunsmoke episode, Zavala which aired Oct. 7, 1968.