1999
National Gallery of Art, 1632
National Gallery of Art, 1989
National Gallery of Art, 1976
National Gallery of Art, 1937
National Gallery of Art, 1663
National Gallery of Art, 1905
National Gallery of Art, 1754
National Gallery of Art, 1704
National Gallery of Art, 1936
National Gallery of Art, 1859
National Gallery of Art, 1964
![#6 (after 'Untitled 1975') [progressive proof 15]](https://api.nga.gov/iiif/55152616-bdc8-4db4-94d1-fffd9fee52f0/full/843,/0/default.jpg)
