1966–1967
Gemini G.E.L., 1970
Charles Ritt, 1973
Gemini G.E.L., 1988
Gemini G.E.L., 1973
Gemini G.E.L., 2008
William Crutchfield, 1970
Gemini G.E.L., 1977
William Crutchfield, 1966
Gemini G.E.L., 1974
Gemini G.E.L., 1968
Gemini G.E.L., 1978
![Four Panels from Untitled 1972 [D panel, trial proof 22]](https://api.nga.gov/iiif/df57963a-61bd-4201-a557-e98a477a446d/full/843,/0/default.jpg)
![0 through 9 [working proof]](https://api.nga.gov/iiif/bb5749dc-fe7a-479b-80ce-942cd2d6de4e/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [C panel, trial proof 5]](https://api.nga.gov/iiif/3b3f0ca3-37fd-4885-a4b7-78a02265e09f/full/843,/0/default.jpg)
