January 14, 1967. In January 1967, the underground paper The San Francisco Oracle announced “A Gathering of the Tribes for a Human Be-In” at Golden Gate Park in San Francisco, located near the Haight-Ashbury area. This gathering precipitated what would come to be known as the “Summer of Love.”
Scan of p.89 of The San Francisco Oracle. The psychedelic newspaper of the Haight-Ashbury (1966-1968). Facsimile edition. (1st ed.), Cohen, Allen (1991), Allen Cohen, ed., Regent Press, ISBN 9780916147112
Haight and Ashbury photo from Kmburke.