1941–2007
National Gallery of Art, 1937
National Gallery of Art, 1854
National Gallery of Art, 1935
National Gallery of Art, 1947
National Gallery of Art, 1803
National Gallery of Art, 1610
National Gallery of Art, 1837
National Gallery of Art, 1602
Glenstone, 1976
National Gallery of Art, 1799
National Gallery of Art, 1940
![#4 (after 'Untitled 1975') [trial proof]](https://api.nga.gov/iiif/e412dbd6-a61c-422c-9421-70cf2c494fdb/full/843,/0/default.jpg)
