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| Image Alt: | Cast of Bonanza in 1959 |
| Starring: | |
| Num Episodes: | 26 |
| Network: | NBC |
| Episode List: | List of Bonanza episodes |
The thirteenth season of the American Western television series Bonanza premiered on NBC on September 19, 1971, with the final episode airing April 2, 1972. The series was developed and produced by David Dortort. Season thirteen starred Lorne Greene, Dan Blocker, and Michael Landon. The season consisted of 26 episodes of a series total 431 hour-long episodes, the entirety of which was produced in color. Season thirteen was aired on Sundays at 9:00 p.m. It fell to #20 in the Nielsen ratings.[1]
Bonanza is set around the Ponderosa Ranch near Virginia City, Nevada and chronicles the weekly adventures of the Cartwright family, consisting of Ben Cartwright (Lorne Greene) and his three sons (each by a different wife), Adam (Pernell Roberts), Eric "Hoss" (Dan Blocker), and Joseph (Michael Landon). Veteran actor Victor Sen Yung played the ranch cook, Hop Sing. In 1964, Pernell Roberts began expressing a desire to leave the series, and so prospective replacements were introduced via Barry Coe as Little Joe's wayward maternal half-brother Clay, and Guy Williams as Ben's nephew Will Cartwright. However, Roberts was persuaded to complete his contract, and remained through season six. The characters of Clay and Will were discontinued. In the ninth season, David Canary was added to the cast as ranch hand/foreman Candy Canady. After four years with the series, Canary left due to a contract dispute. In the twelfth season, Mitch Vogel joined the cast as Jamie Hunter, a teenage orphan who is adopted by Ben Cartwright.
See also: List of Bonanza characters.
See also: List of Bonanza episodes.
Season thirteen aired on Sundays from 9:00pm10:00pm on NBC.
Season thirteen fell to #20 in the Nielsen ratings.