Bonanza various times) Guy Williams, David Canary, Mitch Vogel, and Tim Matheson. The show is known for presenting pressing moral dilemmas. The title "Bonanza" is a term used by miners in regard to a large vein or deposit of silver ore, from Spanish "bonanza" (prosperity) and commonly refers to the 1859 revelation of the Comstock Lode of rich silver ore mines under the town of Virginia City, not far from the fictional Ponderosa Ranch that the Cartwright family operated. The show's theme song, also titled "Bonanza", became a hit song. Only instrumental renditions, absent Ray Evans' lyrics, were used during the
Bonanza 1857), "Bonanza" is also set in what in real life would have been Utah Territory. Several early episodes have fallen into the public domain. These episodes have been released by several companies in different configurations, with substandard picture and sound quality, edited, and by legal necessity with the copyright-protected Evans-Livingston theme song replaced with generic western music. In 1973, NBC licensed the distribution rights to the series, along with the rest of its pre-1973 library, to National Telefilm Associates, which changed its name to Republic Pictures in 1986. Republic would become part of the Spelling Entertainment organization in 1994 through