Bonanza series's long run. In 2002, "Bonanza" was ranked No. 43 on "TV Guide"s 50 Greatest TV Shows of All Time, and in 2013 "TV Guide" included it in its list of The 60 Greatest Dramas of All Time. The time period for the television series is roughly between 1861 (Season 1) and 1867 (Season 13) during and shortly after the American Civil War. During the summer of 1972, NBC aired reruns of episodes from the 1967–1970 period in prime time on Tuesday evening under the title Ponderosa. The show chronicles the weekly adventures of the Cartwright family, headed by the
Bonanza extreme pressure from other gang members. Coffee ends up showing the town that youth and a fast gun don't replace experience. Guy Williams was slated in 1964, the year that "Bonanza" hit #1 in the ratings, to replace Pernell Roberts upon Roberts' departure, enabling the series to preserve the four-Cartwright format for the run of the series. His character, Ben's nephew Will Cartwright, was introduced and was the lead character in five episodes, receiving "Starring" billing after the four original rotating Cartwrights during his second appearance going forward, but Roberts changed his mind later and decided to stay for one