1980–1981
Gemini G.E.L., 1973
Gemini G.E.L., 1972
Gemini G.E.L., 1969
Gemini G.E.L., 1976
Gemini G.E.L., 1977
Gemini G.E.L., 2008
Gemini G.E.L., 1996
Gemini G.E.L., 1967
Ronald Davis, 1971
![Drypoint Eta [special proof]](https://api.nga.gov/iiif/e7f4e14c-f266-4b3e-8981-9cec828495d8/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [D panel, working proof 17]](https://api.nga.gov/iiif/8349873a-d39e-497b-a444-8b7789424c82/full/843,/0/default.jpg)
![Zone [trial proof 2]](https://api.nga.gov/iiif/b55fc1e7-9393-464d-882d-5849802c27d8/full/843,/0/default.jpg)
![0 through 9 [working proof]](https://api.nga.gov/iiif/8e7dce8d-eb00-4aa9-b0d5-4ccf95263a08/full/843,/0/default.jpg)
