Hallucination Generation

I mean my mom saw this movie the first time in Saratoga, California when the commune did a movie one summer night in 68. I visited her last month and we went to San Francisco (she lives in Sunnyvale, California now) and we saw the movie together at The Haight. I wish I was alive in the 60s it's so tight and she said that the movie was just like when she was going to San Jose State and joined a commune near Ben Lomand near Santa Cruz, California and did them for one summer. They used to go to this place called The Cow Palace in south San Francisco for weekend concerts that summer and also went to this place called Winterland and hang for a week or so. I mean like they have the Hallucination Generation at The Haight as a film, so why can't I buy it in at least VHS if not a movie of this quality and historical value should be available in DVD. It is really a shame and if anyone knows where I can buy this movie for my mother and me I would appreciate it if you could email me as soon as possible.