1969–1970
Gemini G.E.L., 1971
Gemini G.E.L., 1999
Gemini G.E.L., 1981
Gemini G.E.L., 1966
Gemini G.E.L., 1972
Roy Lichtenstein, 1984
Gemini G.E.L., 1967
Gemini G.E.L., 1968
Gemini G.E.L., 1982
Gemini G.E.L., 1970
Gemini G.E.L., 1978
Roy Lichtenstein, 1951
![Delaware Crossing [color trial proof]](https://api.nga.gov/iiif/e9a5612d-0efc-4b70-9b81-e99b1d2f5371/full/843,/0/default.jpg)
![Figure 8 [trial proof 3]](https://api.nga.gov/iiif/529730ec-65c0-47b6-9490-ebe6bab38d82/full/843,/0/default.jpg)
