14x20" second printing stiff paper poster featuring art by Rick Griffin for Jan. 14, 1967 event held at the Polo Grounds in Golden Gate Park, San Francisco, CA. Various youth movements came together for this event. w/many 1960s icons appearing; their names appear in different style text at right/left margins. Of note is Timothy Leary (it was at this event he gave his most memorable speech telling everyone to "Turn On, Tune In, Drop Out"), Dick Gregory, Jerry Ruben, Allen Ginsberg, Michael McClure, Gary Snyder and others. Also performing were "All San Francisco Rock Bands" and while not specified, these were The Grateful Dead, Jefferson Airplane and Quicksilver Messenger Service. Center features illustration of Native American on horseback w/guitar. An eagle talon holds pair of lightning bolts above him. Some scattered corner tip/margin wear but still bright and clean. VF.