1974
Gemini G.E.L., 1968
Benjamin B. Smith, 1967
Gemini G.E.L., 1976
Gemini G.E.L., 1980
Gemini G.E.L., 1990
Gemini G.E.L., 1974
Gemini G.E.L., 1969
Gemini G.E.L., 1978
Gemini G.E.L., 1981
Gemini G.E.L., 1977
![Figure 5 [trial proof 1]](https://api.nga.gov/iiif/11a9dbc3-57c4-4067-a0dc-a96f5f5f4375/full/843,/0/default.jpg)
![Bookplate for David Grainger Whitney [trial proof]](https://api.nga.gov/iiif/f200927e-d734-46c7-81db-c0e9800f15e1/full/843,/0/default.jpg)
![Two Flags [trial proof C]](https://api.nga.gov/iiif/ac692c0c-0101-4523-be8a-daa4b4c23a73/full/843,/0/default.jpg)
![Untitled [working proof]](https://api.nga.gov/iiif/b4be5e7e-80be-48a1-a581-18d55dbcc60b/full/843,/0/default.jpg)
![Cicada [trial proof]](https://api.nga.gov/iiif/8d19bb05-4941-458f-a3b1-68c12fad8c0f/full/843,/0/default.jpg)