Kunst der Sechziger Jahre im Wallraf-Richartz Museum Köln

Evelyn Weiss and Rainer Budde, published by Gert von der Osten and Horst Keller, 5th expanded edition, 1971. Screw-bound catalogue with plexiglas cover, pages of various materials. Extensive overview from Josepth Beuys to Roy Lichtenstein.