Naturalist, conservationist, author of "The Sand County Almanac," a classic in ecology. He helped found the Wilderness society and wrote about preserving the 'balance of nature'.

Hippie artist famous for album covers, movies, paintings, advertising. His colorful, flowing style graphics had a great influence on art in the 60s.

Famous sitar player from India. He wooed the crowd with his mastery at the 1967 Monterey Pop festival and got a very long standing ovation and thus became a legend. He taught George Harrison how to play the sitar in 1966.

His baby book was The Bible to mothers of the hippy generation. He was against spanking children, and his non-violent stance carried over when those same children were sent to war. He spoke and marched at many peace rallies and counseled draft evaders. For this he was sentenced to two years in jail.

A dude from Michigan who got put in prison for ten years for selling two joints to an undercover cop. His conviction was overturned thanks mainly in part to John Lennon and seven others who organized a movement to set him free. Lennon even wrote about him in a song: "It ain't fair, John Sinclair..."

Famous for his one hit record, "Tiptoe Through the Tulips." With his shrill falsetto he became a cultural icon of the hippy movement. Popular but unattractive, the mini-ukelele playing Tim eventually found love, Miss Vicki, and got married.

Also known as Bear, manufactured LSD for the first acid tests in San Francisco in the 60's. Colorful Owsley acid is legendary for its purity. Bear was also the original soundman for the Grateful Dead.

The psychedelic guru, acid impresario, prolific author, unchallenged hero of the free your mind movement. "Turn-on, tune-in, and drop-out." Those words inspired a generation to experience the mind-expanding capabilities of LSD. Leary's determination to experiment and turn on people got him kicked out of Harvard and Nixon called him "The most dangerous man in America."

Stephen gained famed for his Monday night classes at San Francisco State where he talked about hippy values. When he took to the road his students followed and soon there was a caravan of wandering gypsies, 400 people in 60 vehicles. He eventually settled down with them and started The Farm, an ongoing Tennessee commune which pioneered organic and alternative methods of agriculture, education and social interaction.

As a standup comedian in the '50s, Lenny felt nothing was sacred. So he joked about racism, drugs, homophobia, nuclear testing, and abortion. What made him famous was his unmitigated use of profanity. He was arrested many times, for obscenity and narcotics. He paved the way for others to exercise free speech, and inspired just about every comic since.

Sandoz company scientist who inadvertently discovered the mind transporting properties of LSD.