1951
National Gallery of Art, 1946
National Gallery of Art, 1967
National Gallery of Art, 1997
National Gallery of Art, 1895
National Gallery of Art, 1780
National Gallery of Art, 1825
National Gallery of Art, 1984
National Gallery of Art, 1646
National Gallery of Art, 1977
National Gallery of Art, 1939
National Gallery of Art, 1936
National Gallery of Art, 1924
![Watchman [trial proof]](https://api.nga.gov/iiif/fa04c259-f60d-4788-87e4-45a69dcb5d12/full/843,/0/default.jpg)
![Red/Green [working proof 7]](https://api.nga.gov/iiif/b1e2d368-3855-48e4-8b76-ca43947825d4/full/843,/0/default.jpg)
