Complete set of five announcement cards / an artist's project for Robert Barry's "Marcuse Series." Includes a double sided postcard / announcement published in conjunction with opening held at Galleria Sperone, Turin, Italy, December 1, 1970; double sided postcard / announcement published in conjunction with opening held at Yvon Lambert, Paris, France, January 12, 1971; double sided postcard / announcement published in conjunction with opening held at Paul Maenz, Cologne, Germany, March 30 - April 8, 1971; single sided postcard / announcement published in conjunction with show held at Eugenia Butler, Los Angeles, CA, June 5-19, 1971; and Bulletin 37, a single folded sheet / artist's project by Robert Barry published in conjunction with opening held at Art & Projects, Amsterdam, The Netherlands, April 10, 1971. According to Barry no card was issued by Galleria San Fedele," Milan, that is indexed as site 2 on the cards.