1920–1930
National Gallery of Art, 1937
National Gallery of Art, 1956
National Gallery of Art, 1500
National Gallery of Art, 1925
National Gallery of Art, 1942
National Gallery of Art, 1938
National Gallery of Art, 1940
National Gallery of Art, 1519
National Gallery of Art, 1962
National Gallery of Art, 1884
National Gallery of Art, 1943
National Gallery of Art, 1797
![Neptune Seated on a Dolphin [reverse]](https://api.nga.gov/iiif/853c5865-5fa9-4330-b2de-749c7338dbae/full/843,/0/default.jpg)
![Zwei Tigerstudien (Two Tiger Studies) [p. 8]](https://api.nga.gov/iiif/d9f2c08e-d559-4886-b2a5-44e8ecccb028/full/843,/0/default.jpg)
