Excerpt from: http://home.sunrise.ch/~prkoenig/manson.htm Before Charles Manson (b. 1935) visited the 'parties' open to outsiders held at Solar Lodge meetings, he had had a rather chequered occult history. He is supposed to have first become interested in Scientology while he was incarcerated at the McNeil Island Penitentiary in Washington (Scientology has prison recruiting programmes). There it is said that Manson received about 150 hours of Scientology counselling.
After his release from prison, he went to Los Angeles, where it is claimed that he attended several Scientology events where Hollywood stars were guests, including possibly the dedication ceremony for Scientology's first 'Celebrity Center'. Manson was undoubtedly eager to meet celebrities to further his musical ambitions and find someone to produce his guitar-playing; it is known that he contacted one of the Beach Boys, and Doris Day's son.
There are hints that not long after this he became involved with the Solar Lodge, and may also have had links with 'The Process', a Satanist-oriented group which had originally broken away from Scientology; Scientology itself had early connections with Crowley's O.T.O., in the form of L. Ron Hubbard's association with Jack Parsons.