'31st Biennial Exhibition', Corcoran Gallery of Art, Washington, 31 January-9 March 1969, cat. no. 77.

'Six Painters', Albright-Knox Art Gallery, Buffalo, New York, 5 October-14 November 1971, cat. no. 35 (ill.); travelled to the Baltimore Museum of Art, 11 December 1971-23 January 1972; to Milwaukee Art Center, 12 February-26 March 1972/