(Galerie Artina, Paris). (Galerie Rudolph Zwirner, Cologne). (Galerie Rosenbach, Hannover, purchased 1971). (Galerie Beyeler, Basel, by March, 1980); (Annely Juda Fine Art, London, by July 1980). (Helen Serger/La Boetie, Inc., New York, by 1985); Ruth Kainen, Washington, D.C.; Gift to NGA, 2012.