Glen A. Larson created a new character on McCloud (1970) after meeting Sidney Clute on the set of this episode, where Clute plays a prosecutor; Clute would play Det. Simms, or variations on him for the rest of his life, including a 3-year run as La Guardia on Cagney & Lacey (1981), until his death.
The scene of Kid Curry testifying in court is the flashback Helen Archer remembers in High Lonesome Country (1972) when she realizes who Thaddeus Jones really is.
In one scene showing the posse continuing to chase Smith and Jones, you can see it's stock footage from "The Virginian" TV series. You can see the Virginian and Trampas in the group. In another scene, it's stock footage from "The Big Valley". You can see Heath Barkley and Nick Barkley leading the posse.