1969–1970
Roy Lichtenstein, 1969
Roy Lichtenstein, 1961
Gemini G.E.L., 1967
Gemini G.E.L., 1992
Gemini G.E.L., 1991
Gemini G.E.L., 1982
Gemini G.E.L., 1972
Roy Lichtenstein, 1993
Gemini G.E.L., 1973
Gemini G.E.L., 1986
![Untitled [trial proof]](https://api.nga.gov/iiif/7e757d53-095b-44f3-acf7-c4784f95648e/full/843,/0/default.jpg)
![Zone [trial proof 1]](https://api.nga.gov/iiif/87df4b1f-8820-45c3-8926-a1dfca8b3aac/full/843,/0/default.jpg)
