This was one of three different series to have Adam West appear as Doc Holliday. The other two were Lawman (1958) and Sugarfoot (1957).
Wayde Preston walked off the set after a dispute with producers. He was replaced by Donald May, who was introduced as Christopher Colt's cousin, Sam Colt, Jr. Preston and the studio would eventually settle their differences, and he returned for what would turn out to be the final episodes, which featured both Colt cousins.
In Britain, the show was known as "The Colt Cousins".