1935
National Gallery of Art, 1920
National Gallery of Art, 1884
National Gallery of Art, 1770
National Gallery of Art, 1507
National Gallery of Art, 1895
National Gallery of Art, 1952
National Gallery of Art, 1870
National Gallery of Art, 1490
National Gallery of Art, 1554
National Gallery of Art, 1576
National Gallery of Art, 1917
National Gallery of Art, 1903
![Crouching Monkey and Man's Head; Bones and Muscles [verso]](https://api.nga.gov/iiif/f595e0a4-6da5-4ca6-9204-7b3804549a1b/full/843,/0/default.jpg)
![An Owl [reverse]](https://api.nga.gov/iiif/5e0eff2b-f67d-46c3-bde6-b02369debad9/full/843,/0/default.jpg)
