1990
National Gallery of Art, 1917
National Gallery of Art, 1939
National Gallery of Art, 1969
National Gallery of Art, 1808
National Gallery of Art, 1657
National Gallery of Art, 1955
National Gallery of Art, 1964
National Gallery of Art, 1676
National Gallery of Art, 1920
National Gallery of Art, 1622
National Gallery of Art, 1971
![Untitled, Second State (Ruler and Fork) [trial proof]](https://api.nga.gov/iiif/b1b3bd31-fbba-4070-9ef3-de69c2482648/full/843,/0/default.jpg)
![Yunan (State III) [artist's proof]](https://api.nga.gov/iiif/4d5cd6e8-de39-424e-b601-1049ad681b24/full/843,/0/default.jpg)