1980–1981
Gemini G.E.L., 1978
Gemini G.E.L., 1974
Gemini G.E.L., 1972
Gemini G.E.L., 1976
Gemini G.E.L., 1980
Gemini G.E.L., 1969
Gemini G.E.L., 1977
Gemini G.E.L., 1994
Gemini G.E.L., 1979
Gemini G.E.L., 1991
![Drypoint Epsilon [special proof]](https://api.nga.gov/iiif/931b0d88-3da6-475b-9a3f-dbdac553901d/full/843,/0/default.jpg)
![Figure 9 [trial proof]](https://api.nga.gov/iiif/1520fef4-8093-472e-93aa-8724458aefcc/full/843,/0/default.jpg)
![Easel [special proof]](https://api.nga.gov/iiif/e816a30f-9262-47db-b41d-5a4e2fe441ea/full/843,/0/default.jpg)
![Keys (with Intrusion) [special proof]](https://api.nga.gov/iiif/9abfa23a-59be-4c8b-8ece-89814db49ce4/full/843,/0/default.jpg)