Contrasts of Form: Geometric Abstract Art 1910 – 1980, The Museum of Modern Art, New York, New York, October 1, 1985 – January 7, 1986; Biblioteca Nacional, Madrid, Spain, April 17 – June 8, 1986; Museo National de Bellas Artes, Buenos Aires, Argentina, July 15 – August 25, 1986; Museu de Arte de São Paulo/Assis Chateaubriand, São Paulo, Brazil, September 18 – October 19, 1986; Museo de Arte Contemporaneo, Caracas, Venezuela, November 11, 1986