"John Williamson, a pioneer of the 1960s sexual revolution as co-founder of Topanga Canyon's Sandstone Retreat..."

"... where nudity and free love once took place with abandon, has died at age 80."

[At Sandstone Retreat] as many as 500 people would gather on weekends to frolic in the nude, swap spouses and engage in group sex...

"We actually had open sexuality and nudity, but it was optional. Everything was optional," Barbara Williamson told The Associated Press on Thursday. "We provided a wonderful, wonderful environment in a natural setting, and that natural setting just sort of gave people permission."...

It was reading Ayn Rand's book "Atlas Shrugged" that John Williamson said prompted him to quit a defense-industry job in electronics and move to California in the early 1960s. The book portrays a society in which people, fed up with government and industry controlling their lives, walk away from their jobs.