Leonard Nimoy and DeForest Kelley declined to appear as Spock and Leonard McCoy. Armstead competed against DeForest Buckner and Quinton Dial. Dabbs Greer and DeForest Kelley also appear in this episode. Holliday refuses to help the lawman, holding a grudge against Wyatt's brother, Morgan (DeForest Kelley). She served as head nurse, working under Dr. McCoy (DeForest Kelley). Variants include Forest, De Forest, De Forrest, DeForest and DeForrest. This was one of DeForest Kelley's favourite episodes. He created a second pilot called "333 Montgomery" about a lawyer, played by DeForest Kelley. There is also a sample of DeForest Kelley's voice from the episode "I, Mudd". He enjoyed the references to the original series, especially DeForest Kelley's appearance. Salzwedel was born in DeForest, Wisconsin. Swanson appeared in a 1925 short produced by Lee DeForest in his Phonofilm sound-on-film process. In 1931, experimental television station W2XCD began transmitting from DeForest Radio Corporation in Passaic. Alice was the daughter of Henry deForest. However, loggers have used these roadways to further deforest the surrounding jungle.