found: His How many Zen Budd. does it take to screw in a lightbulb?, 1980: t.p. (Paul Hoffman) CIP author info. (editor at Scientific American; lives in New York City)
found: Phone call to St. Martin's Press, 3/13/80 (Paul W. Hoffman; b. 3/30/56)
found: Crypton, Dr. The Museum of Science and Industry, Chicago, presents the Mind game, c1983: CIP t.p. (Dr. Crypton) CIP data sheet (Dr. Crypton (Paul Hoffman)) copr. (Paul Hoffman)
found: Uri suhakcha modu nŭn yakkan michʻin kŏmnida, 1999: t.p. (Pʻol Hopʻŭman)