1966
Gemini G.E.L., 1971
Josef Albers, 1970
Gemini G.E.L., 1978
Josef Albers, 1964
Josef Albers, 1975
Josef Albers, 1944
Josef Albers, 1972
Gemini G.E.L., 1984
James Webb, 1968
Benjamin B. Smith, 1972
Gemini G.E.L., 1977
![Coathanger and Spoon [proof]](https://api.nga.gov/iiif/6cd70cc0-3dc2-47bd-af93-02136cc0c7dc/full/843,/0/default.jpg)
