In their book 'The Have Gun - Will Travel Companion', authors Martin Grams, Jr. and Les Rayburn report that Richard Boone's real life son, Peter, made his acting debut in this episode. They further state that this episode was written with the expectation that Red Skelton would portray the role of puppeteer Jack Burnaby. Apparently, negotiations were unable to come to fruition.
This episode is also known as "The Montebank." A montebank is a person who sells quack medicine from a platform.
Dr Humbug/Jack Barnaby's (Crahan Denton) sign on his wagon reads: "Dr Humbug's Articulated Marionettes In The Tragikal Comedy Punch & Judy"