1972
Gemini G.E.L., 1971
National Gallery of Art, 1830
National Gallery of Art, 1963
National Gallery of Art, 1936
National Gallery of Art, 1668
National Gallery of Art, 1940
National Gallery of Art, 1700
National Gallery of Art, 1438
National Gallery of Art, 1935
National Gallery of Art, 1924
National Gallery of Art, 1961
National Gallery of Art, 1595
![Good Time Charley [working proof]](https://api.nga.gov/iiif/6f452f79-dbde-4d18-b0db-b7dcbe6e0d88/full/843,/0/default.jpg)
![WEG I from White Embossings on Gray [artist's proof]](https://api.nga.gov/iiif/4dc94055-c252-4edf-be4b-dc355e14c84e/full/843,/0/default.jpg)
