Herb Greene's '60s Haight-Ashbury shots immortalize era, Grace Slick's bird - 48 hills “To me the [definition of] the real, true hippie San Francisco stemmed from [the transition from] beatnik to hippie in 1965 to 1966, and then the Monterey Pop Festival,” said attendee Lourdes Livingston. “After the Monterey Pop Festival everything got blown out.”