Exhibition catalogues
Tentoonstellingscatalogi
New York: Museum of Modern Art; 1992, ©1968
Exhibition shown Mar. 27 -June 9, 1968, at the Museum of Modern Art; July 16 - Sept. 8, 1968, at the Los Angeles County Museum of Art; and Oct. 19 - Dec. 8, 1968 at the Art Institute of Chicago.