1966–1967
Gemini G.E.L., 1972
Gemini G.E.L., 1980
Gemini G.E.L., 1978
Gemini G.E.L., 1987
Gemini G.E.L., 1969
Charles Ritt, 1969
Gemini G.E.L., 1981
Gemini G.E.L., 1973
Charles Ritt, 1973
Gemini G.E.L., 1990
![Zone [trial proof]](https://api.nga.gov/iiif/ac089abd-a62b-4356-971b-e8cff96a8112/full/843,/0/default.jpg)
![Figure 0 [trial proof]](https://api.nga.gov/iiif/63fe52a2-5065-4d46-b6db-11e71dcc1ab3/full/843,/0/default.jpg)
![Cicada [trial proof]](https://api.nga.gov/iiif/3b2c06da-678e-4b21-9c22-b6fe1ee4cf02/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [D panel, trial proof 28]](https://api.nga.gov/iiif/f05fd575-87ee-4d47-a89c-7e21e39425e8/full/843,/0/default.jpg)
![Untitled [working proof]](https://api.nga.gov/iiif/bb0e9873-8f79-40a1-86e5-a14dc11344e1/full/843,/0/default.jpg)
