Earlier that same year, guest stars Nick Adams and Myron Healey had worked together on screen in an episode of Adams' regular series The Rebel (1959) titled The Pit (1961). Within the next decade, Healey and Adams would also both later star in separate Kaiju films opposite some of Toho Studios' most popular giant monsters--Healey in Varan the Unbelievable (1962) (with the first of few screen appearances by the title monster) and Adams in both Frankenstein vs. Baragon (1965) (US title: "Frankenstein Conquers the World," featuring Toho's Frankenstein opposite Baragon) and Invasion of Astro-Monster (1965) (US title: "Monster Zero," featuring Godzilla, Rodan and King Ghidorah). All of those monsters and more (except for Frankenstein) would all appear together later in the epic Destroy All Monsters (1968) (US title: "Destroy All Monsters").
Wagon Train Tracker: Only geographic reference is to nearby "Fort Henderson," entirely fictional. Henderson, Nevada is adjacent to Las Vegas in the southern part of the state, but not in existence until World War II. Allowing for some vagueness on that, plus depicted terrain and continuity from last episode, the train is still in northwestern Nevada heading toward the Washoe Mountains along the Applegate Route branch of the California Trail.