1986
Gemini G.E.L., 1982
Gemini G.E.L., 1994
Gemini G.E.L., 1974
Gemini G.E.L., 1969
Gemini G.E.L., 1980
Gemini G.E.L., 1977
Gemini G.E.L., 1992
Gemini G.E.L., 1973
Gemini G.E.L., 1981
Gemini G.E.L., 1972
![Figure 6 [trial proof]](https://api.nga.gov/iiif/e1ed54ae-ef8b-4792-86e2-64e73a8b1d64/full/843,/0/default.jpg)
![Untitled [trial proof]](https://api.nga.gov/iiif/2dd30dda-3878-4ee3-a656-2d12d201c6b2/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [B panel trial proof 1]](https://api.nga.gov/iiif/96e53c7e-6bbd-4e32-b971-596176ddf6ee/full/843,/0/default.jpg)
![Cicada [trial proof]](https://api.nga.gov/iiif/8d19bb05-4941-458f-a3b1-68c12fad8c0f/full/843,/0/default.jpg)
![Zone [working proof]](https://api.nga.gov/iiif/e0c7a0ce-d1f9-4b47-8a72-7bdca0154a58/full/843,/0/default.jpg)