Bonanza is an NBC television western series that ran from September 12, 1959, to January 16, 1973. Lasting 14 seasons and 430 episodes, it ranks as the second longest running western series (behind Gunsmoke), and within the top 10 longest running, live-action American series. The show continues to air in syndication.
The show is set around the 1860s and it centers on the Cartwright family, who live in the area of Virginia City, Nevada, bordering Lake Tahoe. The series stars Lorne Greene, Dan Blocker, Michael Landon, Pernell Roberts (who left after six seasons), and later David Canary and Mitch Vogel.
The title "Bonanza" is a term used by miners in regard to a large vein or deposit of ore, and commonly refers to the Comstock Lode.
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) to 1867 (Season 13) during and shortly after the American Civil War.
All 32 episodes are in AVI format.