A.1 The back of the "One Tree" postcard. The legend reads "One Tree (Detail). A mail art project using the veneer of one oak tree. 82 participants from 28 countries. A.1 Waste Paper Co. Ltd. 2001. (Left to Right): Buz Blurr, Art Naphro, Rael Mail, Tim Drage, Shopping Trolley Gallery, Guido Vermeulen, P.L.G., and Lothar Trott."