Seminal exhibition catalogue published in conjunction with show held at the Andrew Dickson White Museum of Art, Cornell University, Ithaca, New York, February 11 - March 16, 1969. Essay by Willoughby Sharp, Thomas W. Leavitt, William C. Lipke. Artists include Jan Dibbets, Hans Haacke, Neil Jenney, Richard Long, David Medalla, Robert Morris, Dennis Oppenheim, Robert Smithson, and Gunther Uëcker. Includes discussion from symposium held by the artists in the exhibition at the university. Includes artist's biographies and exhibition histories. Also includes bibliography. Illustrated in black-and-white.