The Strange Fate of Conrad Meyer Zulick - S3-E9
Other mistake: When Doc Donovan reads the wanted posters, the physical description of Heyes mentions dark brown hair and brown eyes, which fits Pete Duel. However, by this episode, Roger Davis had taken over the role. He has light brown hair and blue eyes.
Which Way to the OK Corral? - S2-E20
Other mistake: When Neville Brand is listed as a guest star, guest star is misspelled as "Guast Star." (00:05:08)