1983
Ron McPherson, 1973
Gemini G.E.L., 1967
Gemini G.E.L., 1973
Gemini G.E.L., 1972
Gemini G.E.L., 1976
Gemini G.E.L., 1978
Gemini G.E.L., 1980
Jonathan Borofsky, 1977
Gemini G.E.L., 1969
![Souvenir I [trial proof]](https://api.nga.gov/iiif/7dc37f28-64de-43f8-82ef-1a5ebdc4699e/full/843,/0/default.jpg)
![0 through 9 [trial proof]](https://api.nga.gov/iiif/7b8f2079-eeb2-4cf0-8aac-466c4e4ea0e5/full/843,/0/default.jpg)
![Two Flags [trial proof B]](https://api.nga.gov/iiif/764d5079-5607-4fad-9934-282edc1f9c14/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)
![Figure 0 [experimental proof]](https://api.nga.gov/iiif/d3f97aa7-57b5-4ec1-b233-743f270a070b/full/843,/0/default.jpg)
