The Life and Legend of Wyatt Earp is the first Western television series written for adults,[1] premiering four days before Gunsmoke on September 6, 1955.
[2][3] Two weeks later came the Clint Walker western Cheyenne.
The series is loosely based on the life of frontier marshal Wyatt Earp.
The half-hour, black-and-white program aired for six seasons (229 episodes) on ABC from 1955 to 1961, with Hugh O'Brian in the title role.