1940–1950
National Gallery of Art, 1893
National Gallery of Art, 1824
National Gallery of Art, 1935
National Gallery of Art, 1914
National Gallery of Art, 1910
National Gallery of Art, 1997
National Gallery of Art, 1978
National Gallery of Art, 1607
National Gallery of Art, 1880
National Gallery of Art, 1963
National Gallery of Art, 1947
National Gallery of Art, 1936
![Studies of Horses [recto]](https://api.nga.gov/iiif/b533afa7-e562-4c38-b1c7-0582f32a0bc8/full/843,/0/default.jpg)
![9 from 0-9 (Black) [trial proof]](https://api.nga.gov/iiif/0ea5e84d-d721-41c1-92be-0c0836698c13/full/843,/0/default.jpg)
