1938
National Gallery of Art, 1951
National Gallery of Art, 1615
National Gallery of Art, 1973
National Gallery of Art, 1931
National Gallery of Art, 1956
National Gallery of Art, 1975
National Gallery of Art, 1941
National Gallery of Art, 1884
National Gallery of Art, 1905
National Gallery of Art, 1936
National Gallery of Art, 1938
National Gallery of Art, 1960
![Studies of a Cow [verso]](https://api.nga.gov/iiif/598328ce-72ec-4b2c-90ae-500069945b17/full/843,/0/default.jpg)
