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Related Clues:
- '60s protest of a sort
- Noted San Francisco gathering
- 'Oh, to -- England'
- Summer of Love prelude
- 1960s hippie event
- Hip happening in Golden Gate Park, 1967
- "__ Green": Kermit's song
- Hippie gathering
- It's pretty to behold what Platonic friends discuss at leisure
- '60s counterculture event
- Peaceful protest of the 1960s
- Nineteen sixties hippy gathering
- Hippy gathering
- Groovy 1960s event
- Flower children's gathering