Saturday night at the movies, this one is an excellent example of San Francisco history. Produced by KQED ch 9, way back in 1970. To wit, there actually is a large number of concerts KQED did back then, just like this, many of them have been lost forever..Some of them have been smuggled out by former employees, and bless them because KQED lost most of it at some point, nobody knows for sure
Internet Movie Database (IMDB) link
one of the best ever and you can rent this from Netflix. Thanks Chet Helms!
one of the highest ratings ever