1923
National Gallery of Art, 1895
National Gallery of Art, 1884
National Gallery of Art, 1903
National Gallery of Art, 1953
National Gallery of Art, 1570
National Gallery of Art, 1926
National Gallery of Art, 1952
National Gallery of Art, 1936
National Gallery of Art, 1972
National Gallery of Art, 1942
National Gallery of Art, 1941
National Gallery of Art, 1967
![Schlafender Mandrill (Sleeping Mandrill) [p. 24]](https://api.nga.gov/iiif/bcfae61f-e852-4d02-a813-f5670ee1e0df/full/843,/0/default.jpg)
