1971
Gemini G.E.L., 1969
Gemini G.E.L., 1976
Gemini G.E.L., 1979
Gemini G.E.L., 1966
Frank Stella, 1974
Woodward Foundation, 1966
Gemini G.E.L., 1986
Gemini G.E.L., 1980
Gemini G.E.L., 1981
Gemini G.E.L., 1977
Woodward Foundation, 1962
![#6 (after 'Untitled 1975') [progressive proof 10]](https://api.nga.gov/iiif/0c54492d-0e03-4445-a553-2b5cc5fd3c00/full/843,/0/default.jpg)
![York Factory II [color trial proof III]](https://api.nga.gov/iiif/fca89177-71d6-4f66-8fd4-3094ee7b2014/full/843,/0/default.jpg)
![Drypoint Gamma [special proof]](https://api.nga.gov/iiif/9abd8b66-c637-403e-bf5d-3a9356709bff/full/843,/0/default.jpg)
![Cicada [trial proof]](https://api.nga.gov/iiif/f9249fd6-cbd8-4cd7-8718-be48f7167357/full/843,/0/default.jpg)
![Figure 4 [trial proof]](https://api.nga.gov/iiif/50648fee-98a6-4133-87fa-fbb3cb6e915a/full/843,/0/default.jpg)
