来源
Estate of the artist.
Anon. sale, Stuttgarter Kunstkabinett, Stuttgart, 20-21 May 1958, lot 486.
Galerie Brockstedt, Hamburg.
M. Knoedler & Co., Inc., New York (acquired from the above).
Joan and Lester Avnet, New York (acquired from the above, October 1968).
Brook Street Gallery, Ltd., London.
Acquired from the above by the family of the present owner, November 1973.