KUNST DER SECHZIGER JAHRE Kunst der sechziger Jahre - 4. Auflage. Art of the Sixties - 4th revised edition. Sammlung Ludwig. Wallraf-Richartz Museum, Köln, May 1970. Infolio (30 x 24 cm). Fourth enlarged edition. Bilingual English-German text. 92 artists. Photographic portraits of the artists reproduced on transparency. 209 reproductions of works in color. Hard plexiglass cover and plexiglass spine, bound with 2 rivets; headband . Works by Albers, Andre, Antes, Arman, Beuys, Dine, Dubuffet, Flavin, Fontana, Hamilton, Hartung, Indiana, Johns, Jones, Judd, Klein, Lewitt, Lichtenstein, Mack, Oldenburg, Rauschenberg, Richter, de Saint-Phalle, Serra, Soulages, Spoerri, Stella, Tapies, Twombly, Warhol, Wesselmann, Wols, E.a.