Teenie bopper, speed, stoned, turn on. These were just a few of the words that were defined for tourists as they took a bus ride down Haight Street in San Francisco during 1967 — the Summer of Love.

The untold story of how a German cult, pioneering psychologists and secret LSD experiments sparked a gathering of hippie tribes in 1967 San Francisco that would change the world.

Every movement creates its own primary sources, and the hippies of 1967 San Francisco had a psychedelic one: The San Francisco Oracle. Published in 12 fantastic issues from 1966 to 1968 ...