1845
National Gallery of Art, 1756
National Gallery of Art, 1480
National Gallery of Art, 1936
National Gallery of Art, 1890
Rosenwald, Lessing Julius, 1624
National Gallery of Art, 1911
Rosenwald, Lessing Julius, 1620
National Gallery of Art, 1884
Rosenwald, Lessing Julius, 1880
National Gallery of Art, 1896
National Gallery of Art, 1617
National Gallery of Art, 1935
![Nilpferdkopf (Hippo Head) [p. 16]](https://api.nga.gov/iiif/12c0bf1e-a1fe-433a-987e-d228bedf2807/full/843,/0/default.jpg)
