1971
Gemini G.E.L., 1980
Gemini G.E.L., 1981
Josef Albers, 1972
Gemini G.E.L., 1991
Josef Albers, 1970
Josef Albers, 1964
Ron McPherson, 1973
Gemini G.E.L., 1977
![Cicada [trial proof]](https://api.nga.gov/iiif/8c40a5a6-0530-4164-ba42-24e91fee4b65/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [C panel, trial proof 3]](https://api.nga.gov/iiif/45fd8223-bf09-4d65-b6ff-3037fc071293/full/843,/0/default.jpg)
