10.5 x 15cm, 1pp announcement card with a b/w image of a tractor racking fields on the front. A group show with works by Andre, Christo, Dibbets, Hutchinson, Insley, Long, Morris, Oldenburg, Oppenheim, Smithson included. VG+. One of the gallery's first ever shows. VG+.

20 x 21cm, 204pp plus card covers, The first edition of this famous exhibition catalogue published in conjunction with the major conceptual art show held at Stadtisches Museum, Leverkusen in October 1969 edited by Konrad Fischer and Rolf Wedewer. Cover design by Sol LeWitt.

The exhibition included significant contributions by Arnatt Keith, Baldessari John, Barry Robert, Baxter Iain, Becher Bernd + Hilla, Bochner Mel, Boetti Alighiero, Broodthears Marcel, Brouwn Stanley, Buren, Burgin Victor, Burgy Donald, Butler Eugenia P., Calzolari Pier Paolo, Cotton Paul, Darboven Hanne, Dibbets Jan, Fulton Hamish, Gilbert & George, Graham Dan, Huebler Douglas, Jackson Richard, Kaltenbach Stephen, Kawara On, Kirby Michael, Kosuth Joseph, Lamelas David, Lewitt Sol, McLean Bruce, Nauman Bruce, Penone Giuseppe, Piper Adrian, Polke Sigmar, Prini Emilio, Raetz Markus, Ruppersberg Allen, Ruscha Edward, Sandback Fred, Sladden Richard, Smithson Robert, Ulrichs Timm, Venet Bernar, Weiner Lawrence, Zaj (Marchetti Walther). Texts in German and English with an introduction by Rolf Wedewer and texts by the artists and exhibition histories for each artist. Illustrated in black-and-white throughout.

Very slightly grubby wrappers and one dent to the spine bottom left else VG.