(Leipzig, Alemania, 1884 – New York, 1950)
MUSEUMS AND COLLECTIONS:
Guggenheim Museum New York, U.S.
Metropolitan Museum of Art New York, U.S.
Ackland Art Museum at the University of North Carolina, U.S.
Albright-Knox Art Gallery Buffalo, New York, U.S.
Detroit Institute of Arts Michigan, U.S.
Fine Arts Museums of San Francisco San Francisco, U.S.
Kunsthaus Zurich Zurich Switzerland.
Kunstmuseum Basel Basel, Switzerland.
Kunstsammlung Nordrhein-WestfalenDüsseldorf, Germany.
Los Angeles County Museum of Art Los Angeles, U.S.
MacKenzie Art Gallery Saskatchewan, Canada.
Minneapolis Institute of Arts Minnesota, U.S.
Museu de Arte de São Paulo Sao Paulo, Brasil.
Museum of Fine Arts Boston, U.S.
Museum Kunst Palast Düsseldorf, Germany.
Museum Wiesbaden Germany.
Neue Galerie Museum for German and Austrian Art New York, U.S.
Palazzo Grassi Venice, Italy.
Saint Louis Art Museum, Missouri, U.S.
San Diego Museum of Art San Diego, U.S.
Sarah Campbell Blaffer Foundation Houston, Texas, U.S.
Spencer Museum of Art at the University of Kansas Kansas, U.S.
Sprengel Museum Hannover, Germany.
Staatsgalerie Stuttgart Stutgart, Germany.
Städel Museum Frankfurt, Germany.
State Museums of Berlin Berlin, Germany.
University of Michigan Museum of Art Michigan, U.S.
Washington University Gallery of Art Missouri, U.S.