1970
Gemini G.E.L., 1975
Ron Adams, 1971
Gemini G.E.L., 1991
Gemini G.E.L., 1980
Gemini G.E.L., 1973
Gemini G.E.L., 1976
Gemini G.E.L., 1977
Gemini G.E.L., 1992
Gemini G.E.L., 1972
Gemini G.E.L., 1967
Gemini G.E.L., 1968
Benjamin B. Smith, 1972
![Yunan (State I) [artist's proof]](https://api.nga.gov/iiif/d8a9a906-47c1-4840-92eb-1169a5d80343/full/843,/0/default.jpg)
![Drypoint Beta [special proof]](https://api.nga.gov/iiif/ea062f42-eb4f-4b0f-9986-7ed3aff8c56c/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [D panel, trial proof 16]](https://api.nga.gov/iiif/446aa4b6-83ae-4e40-ad8c-e72b5b2b4f8d/full/843,/0/default.jpg)
![0 through 9 [trial proof]](https://api.nga.gov/iiif/b8975dc4-b08f-4234-971c-f312f66c9c0d/full/843,/0/default.jpg)
