Schulze, Franz. "Art in Chicago: The Two Traditions," in Art in Chicago 1945-1995, Museum of Contemporary Art, ed. Lynne Warren. New York: Thames and Hudson, 1996, p.16-20. Retrieved March 30, 2018.
Event, quote and source found in The Turning Point Art And Politics In 1968 by Nina Castelli Sundell, Cleveland Center for Contemporary Art, Cleveland, 1988. See:[1]