1974
Gemini G.E.L., 1969
Gemini G.E.L., 1992
Gemini G.E.L., 1971
Gemini G.E.L., 1980
Frank Stella, 1970
Frank Stella, 1967
Gemini G.E.L., 1999
Gemini G.E.L., 1970
Gemini G.E.L., 1972
![Figure 9 [trial proof]](https://api.nga.gov/iiif/1520fef4-8093-472e-93aa-8724458aefcc/full/843,/0/default.jpg)
![Untitled #9 [special proof]](https://api.nga.gov/iiif/eaf88898-5f13-48dc-8855-ad7feff8073d/full/843,/0/default.jpg)
![Untitled [trial proof]](https://api.nga.gov/iiif/3e2e1a28-21b4-4ae7-b8f6-a41abc6520d2/full/843,/0/default.jpg)
