1884–1950
National Gallery of Art, 1938
National Gallery of Art, 1939
National Gallery of Art, 1929
National Gallery of Art, 1955
National Gallery of Art, 1963
National Gallery of Art, 1832
National Gallery of Art, 1616
National Gallery of Art, 1710
National Gallery of Art, 1547
National Gallery of Art, 1480
National Gallery of Art, 1919
National Gallery of Art, 1633
![Nilpferdkopf (Hippo Head) [p. 16]](https://api.nga.gov/iiif/12c0bf1e-a1fe-433a-987e-d228bedf2807/full/843,/0/default.jpg)
