1973
David Hockney, 1976
Jeff Wasserman, 1971
Woodward Foundation, 1962
Gemini G.E.L., 1991
Ron Olds, 1973
Gemini G.E.L., 1969
Serge Lozingot, 1976
Gemini G.E.L., 1992
Gemini G.E.L., 1994
Serge Lozingot, 1967
![Figure 0 [trial proof]](https://api.nga.gov/iiif/d2997572-70c3-4e01-a70c-1d6df0f01d31/full/843,/0/default.jpg)
![#6 (after 'Untitled 1975') [progressive proof 3]](https://api.nga.gov/iiif/1eb1db68-7433-4124-8a79-76a9d32078e1/full/843,/0/default.jpg)
