Solomon R. Guggenheim, New York, until 1937; Solomon R. Gugghenheim Museum, New York, 1937-1973; [Serge Sabarsky, Inc., New York, 1973-1975]; Peter Porr, Collonge-Bellerive,1975-1980; [Serge Sabarsky, Inc New York, 1980]; Saul P. Steinberg, New York, from 1980; [Roswitha Haftmann Modern Art, Zurich]; [Berggruen & Cie, Paris]; [Galerie Rosengart, Lucerne, 1988-1991, sold 1991 to]; Janice and Henri Lazarof, Los Angeles, partial, fractional and promised gift 2005 to; LACMA.