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: The Next Generation Bonanza: The Next Generation Bonanza: The Next Generation is a 1988 American made-for-television western film and a sequel to the 1959–1973 television series "Bonanza" starring John Ireland, Robert Fuller, Barbara Anderson, Michael Landon Jr., Brian A. Smith and John Amos. None of the characters from the original series appears since the entire cast, with the exception of Pernell Roberts and Michael Landon, had died. Lorne Greene had signed to reprise his role as patriarch Ben, but died shortly before production began. He was replaced by veteran actor John Ireland, who played Ben's brother Aaron. The movie features Michael Landon Jr.