1970–1971
Gemini G.E.L., 1981
Gemini G.E.L., 1970
Ellsworth Kelly, 1987
Gemini G.E.L., 1983
Gemini G.E.L., 1978
Gemini G.E.L., 1991
Gemini G.E.L., 1986
Ellsworth Kelly, 1951
Benjamin B. Smith, 1966
Gemini G.E.L., 1977
![Cicada [trial proof]](https://api.nga.gov/iiif/6b632a24-c8fd-45ac-9890-c6a0893fae25/full/843,/0/default.jpg)
![Two Sunsets (One with Square Blue Moon) [special proof]](https://api.nga.gov/iiif/7f86a87e-70ef-4ea0-b787-cc4fcd92e717/full/843,/0/default.jpg)
![0 through 9 [trial proof]](https://api.nga.gov/iiif/66b6e2de-94f8-4d4b-bf74-8c5d59b886b2/full/843,/0/default.jpg)