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Bonanza is an American western television series that ran on NBC from September 12, 1959 to January 16, 1973. Lasting 14 seasons and 431 episodes, it ranks as the second longest running western series (behind Gunsmoke) and continues to air in syndication. Centering around the Cartwright family in the Lake Tahoe area, the show stars Lorne Greene, Pernell Roberts, Dan Blocker, Michael Landon, and David Canary.