1992
National Gallery of Art, 1792
National Gallery of Art, 1622
National Gallery of Art, 1852
National Gallery of Art, 1938
National Gallery of Art, 1935
National Gallery of Art, 1936
National Gallery of Art, 1956
National Gallery of Art, 1950
National Gallery of Art, 1929
National Gallery of Art, 1944
National Gallery of Art, 1840
National Gallery of Art, 1928
![Entwurf zu "Vogelspiel" (Sketch for "Birdplay") [p. 31]](https://api.nga.gov/iiif/09dbd1de-8492-417e-8571-fe45ac9cd6c5/full/843,/0/default.jpg)
