A great critical theory book on the works of Duchamp edited by Joseph Masheck. Essays by Guillaume Apollinaire, leon Kochnitzky, Harrriet and Sidney Janis, William Rubin, Werner Hofmann, John Cage, Louise Norton, George Heard Hamilton, Georges Charbonnier, Octavio Paz, Lawrence D. Steffel, Jr., Katherine S. Dreier, Jasper Johns, Willam Copley, Thomas B. Hess, Donald Judd, Clement Greenberg, Moira Roth, Max Kozloff, Hans Richter, Robert Pincus-Witten and others.