From the LIFE magazine September 9, 1966 cover story about psychedelic art:
“Amid throbbing lights, dizzying designs, swirling smells, swelling sounds, the world of art is ‘turning on.’ It is getting hooked on psychedelic art, the latest, liveliest movement to seethe up from the underground.”
More LIFE images from that story and the 1960s psychedelic culture