Cheyenne is a western

Western (genre)

The Western is a genre of various visual arts, such as film, television, radio, literature, painting and others. Westerns are devoted to telling stories set primarily in the latter half of the 19th century in the American Old West, hence the name. Some Westerns are set as early as the Battle of...

 television series of 108 black-and-white episodes broadcast on ABC

American Broadcasting Company

The American Broadcasting Company is an American commercial broadcasting television network. Created in 1943 from the former NBC Blue radio network, ABC is owned by The Walt Disney Company and is part of Disney-ABC Television Group. Its first broadcast on television was in 1948...

 from 1955 to 1963. The show was the first hour-long western, and in fact the first hour-long dramatic series of any kind, with continuing characters, to last more than one season. It was also the first series to be made by a major Hollywood film studio which did not derive from its established film properties, and the first of a long chain of Warner Brothers original series produced by William T. Orr

William T. Orr

William T. Orr was an American television producer associated with a series of western and detective programs of the 1950s-1970s....

.
The series began as a part of Warner Brothers Presents, a program that alternated

Wheel series

A wheel series is a term applied in the broadcast television industry to a television program in which two or more regular series are rotated with the same time slot...

 three different series in rotation.