1980–1981
National Gallery of Art, 1648
National Gallery of Art, 1932
National Gallery of Art, 1940
National Gallery of Art, 1802
National Gallery of Art, 1907
National Gallery of Art, 1500
National Gallery of Art, 1939
National Gallery of Art, 1903
National Gallery of Art, 1979
National Gallery of Art, 1852
National Gallery of Art, 1863
![Drypoint Theta [special proof]](https://api.nga.gov/iiif/86d9b732-bd19-4790-b277-3298550bbd77/full/843,/0/default.jpg)
![20 Foot Ladder for any Size Wall [III]](https://api.nga.gov/iiif/62570984-2817-4cf9-bbf5-044bb015c7eb/full/843,/0/default.jpg)
