Erik Davis at The Paris Review:
The Institute of Illegal Images (III) is housed in a dilapidated shotgun Victorian in San Francisco’s Mission District, which also happens to be the home of a gentleman named Mark McCloud. The shades are always drawn; the stairs are rotting; the door is peppered with stickers declaring various subcultural affiliations: “Acid Baby Jesus,” “Haight Street Art Center,” “I’m Still Voting for Zappa.” As in many buildings from that era, at least in this city, the first floor parlor has high ceilings, whose walls are packed salon-style with the core holdings of the institute: a few hundred mounted and framed examples of LSD blotter.
The III maintains the largest and most extensive collection of such paper products in the world, along with thousands of pieces of the materials—illustration boards, photostats, perforation boards—used to create them. Gazing at these crowded walls, the visitor is confronted with a riot of icons and designs, many drawn from art history, pop media, and the countercultural unconscious, here crammed together according to the horror vacui that drives so much psychedelic art. There are flying saucers, clowns, gryphons, superheroes, cartoon characters, Escher prints, landscapes, op art swirls, magic sigils, Japanese crests, and wallpaper patterns, often in multiple color variations.
more here.