
Origins of the Psychedelic Counterculture
The roots of the 1960s psychedelic movement stretch back to the Beat Generation of the 1950s, when writers like Allen Ginsberg, Jack Kerouac, and William S. Burroughs championed personal liberation and mind-expanding substances. By the early 1960s, Harvard researchers Timothy Leary and Richard Alpert were conducting psilocybin experiments that attracted national attention, while novelist Ken Kesey and his Merry Pranksters were staging Acid Tests in the San Francisco Bay Area. LSD, still legal until October 6, 1966 in California and 1968 at the federal level, was the catalyst that transformed an intellectual fringe into a mass movement.
San Francisco's Haight-Ashbury neighborhood, with its cheap Victorian rentals and proximity to Golden Gate Park, became the geographic heart of this transformation. By 1966, the district was home to the Diggers (a street-theater collective that distributed free food), underground newspapers like the San Francisco Oracle, and a thriving music scene anchored by the Grateful Dead, Jefferson Airplane, and Big Brother and the Holding Company.

