1978
Gemini G.E.L., 1980
Gemini G.E.L., 1969
Gemini G.E.L., 1976
Edward Henderson, 1975
Gemini G.E.L., 1966
Gemini G.E.L., 1987
Gemini G.E.L., 1982
Gemini G.E.L., 1991
Gemini G.E.L., 1989
Ellsworth Kelly, 1992
![Two Flags [trial proof B]](https://api.nga.gov/iiif/764d5079-5607-4fad-9934-282edc1f9c14/full/843,/0/default.jpg)
![Bookplate for David Grainger Whitney [trial proof]](https://api.nga.gov/iiif/9a95d96f-ccf5-40ea-871d-e905e98dd272/full/843,/0/default.jpg)
![Figure 5 [working proof]](https://api.nga.gov/iiif/1ede6c20-d024-455e-bf7d-5f8dee1e9634/full/843,/0/default.jpg)
![0 through 9 [trial proof]](https://api.nga.gov/iiif/93154c38-70f7-4346-9e58-083ab1a15c51/full/843,/0/default.jpg)
![Flower Head [special proof]](https://api.nga.gov/iiif/77e40d43-24c5-4c41-b0c3-66617770f4ae/full/843,/0/default.jpg)
