1967
Gemini G.E.L., 1976
Gemini G.E.L., 1984
Gemini G.E.L., 1971
Benjamin B. Smith, 1971
Gemini G.E.L., 1988
Gemini G.E.L., 2000
Gemini G.E.L., 1970
Gemini G.E.L., 1977
Gemini G.E.L., 1981
Gemini G.E.L., 1975
![#2 (after 'Untitled 1975') [trial proof]](https://api.nga.gov/iiif/a0bae658-6b8b-43d1-922f-470474ca8cbe/full/843,/0/default.jpg)
![Delaware Crossing [color trial proof]](https://api.nga.gov/iiif/0fc75009-e3a8-42bd-8f95-8abb502b1043/full/843,/0/default.jpg)
![WEG I from White Embossings on Gray [artist's proof]](https://api.nga.gov/iiif/4dc94055-c252-4edf-be4b-dc355e14c84e/full/843,/0/default.jpg)
