The artist (1879-1940). [Alfred Flechteim, Dusseldorf/Berlin/Paris/London until 1930]; [Herbert Tannenbaum ( Das Kunsthaus), Mannheim/Amsterdam/New York]; [Daniel- Henry Kahnweiler, Paris until 1934]; [Karl Nierendorf, Cologne /Berlin/New York]; [Israel Ber Neumann, Graphisches Kabinett, New Art Circle, Neumann Gallery, Berlin/New York]; Victor Collection, Pleasantville; [Earl Stendahl Gallery, Los Angeles]; Abraham and Margit W. Chanin, New York; [Staempfli Gallery, New York]; sold to Morton D. May (1914-1983), Saint Louis; [Marlborough Fine Art Ltd., London by 1974]; sold to Robert Gore Rifkind (1928-2019), Beverly Hills; sold and given in 1978 to LACMA.