| Bonanza | |
|---|---|
| Season 12 | |
 Cast of Bonanza in 1959 | |
| Starring | |
| No. of episodes | 28 |
| Release | |
| Original network | NBC |
| Original release | September 13, 1970 – April 11, 1971 |
| Season chronology | |
The twelfth season of the American Western television series Bonanza premiered on NBC on September 13, 1970, with the final episode airing April 11, 1971.[1] The series was developed and produced by David Dortort. Season twelve starred Lorne Greene, Dan Blocker, and Michael Landon. The season consisted of 28 episodes of a series total 431 hour-long episodes, the entirety of which was produced in color.[2] Season twelve was aired on Sundays at 9:00 p.m. It finished the season at #9 in the Nielsen ratings, behind #5 Gunsmoke.[3]
- ^ Shapiro 1997, pp. 147, 150.
- ^ Shapiro 1997, pp. 5, 65–157.
- ^ "TV Ratings: 1970–1971". ClassicTVGuide.com. Retrieved September 14, 2023.