Description of BONANZA: The DVD Complete series Box Set
Bonanza was an American western/cowboy television series which aired on the NBC television network from September 12, 1959 until January 16, 1973. The pilot episode was written by David Dortort, who also produced the series. He had previously produced The Restless Gun and later produced The High Chaparral and The Cowboys, based on the feature film of the same name. Bonanza was the first hour-long network television series filmed in color. For most of its run, the main sponsor of Bonanza was Chevrolet and the stars occasionally appeared in commercials endorsing Chevrolet automobiles. All of the regular cast members had appeared in numerous stage, television and film productions before Bonanza, but none were particularly well-known.
From 1961 to 1972 Bonanza aired on Sunday nights at 9:00 PM throughout most of the United States. This time slot was crucial to the success of the show: from 1964 through 1967, the show was #1 in the yearly Nielsen ratings. In terms of longevity, the show remains NBC's second longest-running series, after Law and Order.