Seven years later, Robert Horton and guest star Richard Jaeckel would co-star in the sci-fi monster movie The Green Slime (1968). This would have been their only other credit together, except Horton does not appear in this episode, other than his regular listed series billing.
Four years after their roles in this episode, Lon Chaney Jr. and Richard Jaeckel would join the all-star cast of the western feature Town Tamer (1965).
Wagon Train Tracker: Reference is made to town of "Twin Falls," but nearest one is in Idaho. Action is shown in California mission country and terrain depicted is California hill country, so the train must still be on the Gila Trail in California, heading westward toward Los Angeles.