1981–1982
Gemini G.E.L., 1982
Gemini G.E.L., 1973
Ellsworth Kelly, 1983
Gemini G.E.L., 1971
Gemini G.E.L., 1968
Gemini G.E.L., 1969
Gemini G.E.L., 1993
Gemini G.E.L., 1978
Peter Carlson, 1976
![Four Panels from Untitled 1972 [A panel, trial proof 2]](https://api.nga.gov/iiif/fc49bfd9-5f8b-48cc-9230-2e7c88c9a7b0/full/843,/0/default.jpg)
![Untitled for Joel Wachs [special proof]](https://api.nga.gov/iiif/0fe2185f-6f0a-441a-8590-9bb345bdb0c3/full/843,/0/default.jpg)
