[1970s] Konzeption Conception. Leverkusen, Städtisches Museum, 1969 Softcover, 20 x 21 cm, approx. 200 pp. Exhibition catalogue published in conjunction with a major conceptual show held in October - November 1969, organized by Konrad Fischer and Rolf Wedewer. Cover design by Sol LeWitt. Texts in English and German. Contains artists' contributions by Baldessari, Barry, Becher, Boetti, brouwn, Broodthaers, Buren, Calzolari, Darboven, Dibbets, Fulton, Gilbert & George, Graham, Huebler, Kawara, Kosuth, Lamelas, Lewitt, Mclean, Nauman, Piper, Smithson, Sandback, Sigmar Polke, Ruscha, Weiner, Zaj et al. Front cover dog-eared and rubbing to spine, toning to paper, generally a fine copy.

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