Bonanza ran from September 1959 to January 1973. In total, the NBC series had 432 episodes, and it stands as the network’s longest-running Western and one of the longest-running live-action series ...
Bonanza and its cast members quickly became a fan favorites when the show aired on September 12, 1959. One of NBC‘s longest-running western TV series went on for 14 seasons and over 430 episodes.
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