Sheet of artist's postage stamps by Robert Watts produced by Walker Art Center for "In the Spirit of Fluxus," held in 1993. Compiled from "Safepost / K.U.K. Feldpost / Jockpost 1961 & 1962; Yamflug 5-Post-5, 1963; Fluxpost 17-17, 1964; and Commemorative FBI Most Wanted, 1986.
