1645–1656
National Gallery of Art, 1938
Bruce Fund, Ailsa Mellon, 1973
National Gallery of Art, 1934
National Gallery of Art, 1837
National Gallery of Art, 1972
National Gallery of Art, 1755
National Gallery of Art, 1936
National Gallery of Art, 1956
National Gallery of Art, 1884
National Gallery of Art, 1967
National Gallery of Art, 1962
National Gallery of Art, 1958
![Zone [working proof]](https://api.nga.gov/iiif/9c42b76d-c997-468c-aed0-01333e425774/full/843,/0/default.jpg)
![Nilpferd, halb unter Wasser (Hippo Partially Submerged) [p. 26]](https://api.nga.gov/iiif/0f03c1a0-932d-4916-8ff8-6ce8c61c4cbc/full/843,/0/default.jpg)
![Untitled [plate LVIII]](https://api.nga.gov/iiif/d352e04d-e6dd-4009-ad82-ca191b44d4de/full/843,/0/default.jpg)