Exhibition catalogue published in conjunction with traveling show held in 1973. Edited by Anne d'Harnoncourt and Kynaston McShine. Written contributions by Michel Sanouillet, Richard Hamilton, Lawrence D. Steefel, Jr., Arturo Schwarz, davidantin, Lucy R. Lippard, Robert Lebel, Octavio Paz, John Tancock, and Bernard Karpel. Includes checklist, bibliography, list of illustrations, and a chronology.