1813–1894
National Gallery of Art, 1914
National Gallery of Art, 1956
National Gallery of Art, 1938
National Gallery of Art, 1990
National Gallery of Art, 1894
National Gallery of Art, 1935
National Gallery of Art, 1490
National Gallery of Art, 1951
National Gallery of Art, 1957
National Gallery of Art, 1480
National Gallery of Art, 1916
National Gallery of Art, 1944
![Dr. Edwin Williams [verso]](https://api.nga.gov/iiif/c2753e1e-793c-459b-8862-ce52152c7f8e/full/843,/0/default.jpg)
![Abstraction [recto]](https://api.nga.gov/iiif/d9b826ab-9915-4283-a591-0c230326525f/full/843,/0/default.jpg)