1981
Gemini G.E.L., 1969
James Reid, 1981
Gemini G.E.L., 1970
Gemini G.E.L., 1981
Saul Steinberg, 1970
Saul Steinberg, 1980
Gemini G.E.L., 1973
Gemini G.E.L., 1972
![Figure 6 [trial proof]](https://api.nga.gov/iiif/e1ed54ae-ef8b-4792-86e2-64e73a8b1d64/full/843,/0/default.jpg)
