IT WAS A WHO’S WHO OF THE SAN FRANCISCO counterculture. For three nights in January 1966, some 10,000 weirdos, longhairs, rockers, folkies, and peaceniks gathered at Longshoremen’s Hall to attend what was billed as the Trips Festival, a mind-blowing, multimedia experience. They’d come at the invitation of author Ken Kesey, the pied piper of psychedelia; Stewart Brand, the brains behind the Whole Earth Catalog; Roman Sender, cofounder of the San Francisco Tape Center, the city’s’ “it” avant-garde performance space; and a young concert promoter, Bill Graham. The Hell’s Angels were on hand. So was the San Francisco Mime Troupe, a group of street theater actors, and many of Kesey’s cohorts, called the Merry Pranksters. Kesey was present, too, but disguised in a space helmet to avoid the fuzz (he…
