1847–1898
National Gallery of Art, 1770
National Gallery of Art, 1775
National Gallery of Art, 1785
National Gallery of Art, 1884
National Gallery of Art, 1716
National Gallery of Art, 1986
National Gallery of Art, 1627
National Gallery of Art, 1937
National Gallery of Art, 1557
National Gallery of Art, 1600
National Gallery of Art, 1889
![Schlafender Mandrill (Sleeping Mandrill) [p. 24]](https://api.nga.gov/iiif/bcfae61f-e852-4d02-a813-f5670ee1e0df/full/843,/0/default.jpg)
