The Franchise That Never Was
Andrew Bergman was one of the key writers, and the movie’s success can be attributed to him as well. After the movie became such a hit, he helped create a new TV series called ‘Black Bart.’ The pilot aired on April 4, 1975, which starred Louis Fosset Jr. as Bart.
Source: YouTube
Interestingly, the show was continuing to be filmed despite never being seen by the public. The reason was due to the fact that the show was being produced under the contract that it was an official sequel.