1986–1987
Gemini G.E.L., 1969
Gemini G.E.L., 1971
Gemini G.E.L., 1986
Gemini G.E.L., 1974
Gemini G.E.L., 1999
Gemini G.E.L., 1967
Gemini G.E.L., 1976
![Figure 2 [trial proof]](https://api.nga.gov/iiif/3eed4c8e-78f0-4db2-bab4-6351c1b36b94/full/843,/0/default.jpg)
![Figure 0 [progressive proof 2]](https://api.nga.gov/iiif/d1e4baee-048a-4492-b696-3f8561b366c3/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)