1999
Gemini G.E.L., 1967
Gemini G.E.L., 1974
Gemini G.E.L., 1981
Gemini G.E.L., 1976
Gemini G.E.L., 1980
Gemini G.E.L., 1972
Gemini G.E.L., 1991
Gemini G.E.L., 1968
Gemini G.E.L., 1977
![Cicada [trial proof]](https://api.nga.gov/iiif/6b40644d-10f9-4df8-b459-51f33e0c0c40/full/843,/0/default.jpg)
![Cicada [trial proof]](https://api.nga.gov/iiif/6b632a24-c8fd-45ac-9890-c6a0893fae25/full/843,/0/default.jpg)
![Bookplate for David Grainger Whitney [working proof]](https://api.nga.gov/iiif/52b38bc8-6e01-4fda-9171-37f508882e6d/full/843,/0/default.jpg)
![Drypoint Eta [special proof]](https://api.nga.gov/iiif/e7f4e14c-f266-4b3e-8981-9cec828495d8/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)