Clint Walker had a contract dispute with Warner Brothers, which led to him briefly leaving. Under his contract, Walker had to give them 50% of his personal appearance fees, and could only record music under the Warner Brothers label. He wanted the amount cut, and to be able to sign with whatever record company he chose. The sides reached an agreement, and Walker eventually returned to work.
Contrary to popular belief, Clint Walker did not take his shirt off in every episode. In fact, of the 107 "Cheyenne" episodes in which Walker appeared, he only was seen bare-chested in 25 of them. The breakdown is as follows: in Season 1, six such episodes, in Season 2, six such episodes, in Season 3, seven such episodes, in Season 4, four such episodes, in Season 5, zero such episodes, in Season 6, two such episodes, in Season 7, zero such episodes.
The first original television series produced by a major Hollywood film studio, Warner Brothers (some of Walt Disney's Wonderful World of Color (1954), which had premiered the year before, did not really consist of programming made exclusively for TV).