Meet Mark McCloud, The World's Leading Collector Of LSD Art

Most artists haven't been arrested by the DEA and investigated by the FBI. Then again, most artists don't have the over 33,000 tabs of LSD in their possession. How's that for an intro?

Mark McCloud is the world's leading collector of "Blotter Art," which, for the more straight-laced set, is another way of saying he collects the small papers used to transport and relay acid, or LSD. McCloud's collected the stuff since the '60s, framing and hanging the trippy paper trails in his now legendary Victorian home in San Francisco.

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