Abstraction, Geometry, Painting: Selected Geometric Abstract Painting in America Since 1945, Albright-Knox Art Gallery, Buffalo, New York, September 15 – November 5, 1989; Center for the Arts, Miami, Florida, December 15, 1989 – February 25, 1990; Milwaukee Art Museum, Milwaukee, Wisconsin, April 1 – June 1, 1990; Yale University Art Gallery, New Haven, Connecticut, July 1 – August 30, 1990; Akron Art Museum, Akron, Ohio, September 10