1936
National Gallery of Art, 1617
National Gallery of Art, 1837
National Gallery of Art, 1950
National Gallery of Art, 1929
National Gallery of Art, 1973
National Gallery of Art, 1639
National Gallery of Art, 1917
National Gallery of Art, 1951
National Gallery of Art, 1895
National Gallery of Art, 1884
National Gallery of Art, 1938
![Studies of a Cow [verso]](https://api.nga.gov/iiif/598328ce-72ec-4b2c-90ae-500069945b17/full/843,/0/default.jpg)
