1987–1988
Gemini G.E.L., 1970
Gemini G.E.L., 1971
Gemini G.E.L., 1969
Gemini G.E.L., 1966
Gemini G.E.L., 1976
Gemini G.E.L., 1972
Gemini G.E.L., 1981
Gemini G.E.L., 1967
Gemini G.E.L., 1989
Ellsworth Kelly, 1991
Gemini G.E.L., 1980
![Coathanger and Spoon [proof]](https://api.nga.gov/iiif/6cd70cc0-3dc2-47bd-af93-02136cc0c7dc/full/843,/0/default.jpg)
![Figure 3 [color trial proof]](https://api.nga.gov/iiif/749a442c-2589-4cf8-8b0b-6a59e6356a02/full/843,/0/default.jpg)
![#5 (after 'Untitled 1975') [trial proof]](https://api.nga.gov/iiif/028f4d5b-1fe2-4dac-b467-d2d0709d1e67/full/843,/0/default.jpg)
![Cicada [trial proof]](https://api.nga.gov/iiif/3e2204df-6603-4055-81c6-48169c171251/full/843,/0/default.jpg)
![Drypoint Beta [special proof]](https://api.nga.gov/iiif/ea062f42-eb4f-4b0f-9986-7ed3aff8c56c/full/843,/0/default.jpg)