Catalogue published in conjunction with an exhibition at Other Books and So, Amsterdam, April 27 - May 15, 1976. Original rubber-stamped front cover by Ulises Carrion and back cover by de Rook. Mimeographed book with several pages actually rubber stamped by various artists and one bound-in, numbered airmail letter sheet densely rubber stamped by Michael Rene d'Arnal and Marlies Sartory. Illustrated in black-and-white and color.