1614
National Gallery of Art, 1638
United States Government, 1939
National Gallery of Art, 1950
United States Government, 1938
National Gallery of Art, 1955
National Gallery of Art, 1926
National Gallery of Art, 1938
National Gallery of Art, 1884
National Gallery of Art, 1941
United States Government, 1937
National Gallery of Art, 1935
![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)
