Prepared on the occasion of the exhibition organized by the Art Institute of Chicago. Exhibition held at the Art Institute of Chicago, Nov. 2, 1991-Jan. 5, 1992; Hirshhorn Museum and Sculpture Garden, Smithsonian Institution, Washington, D.C., Feb. 5-May 10, 1992; The Museum of Contemporary Art, Los Angeles, July 26-Oct. 4, 1992; Philadelphia Museum of Art, Nov. 8, 1992-Jan. 3, 1993.