1975
Gemini G.E.L., 1986
Jasper Johns, 1960
Sant, Roger, Mr. and Mrs., 1976
Pappajohn, John, Mr. and Mrs., 1976
Gemini G.E.L., 1983
Glenstone, 1973
Patrons' Permanent Fund, 1928
Gemini G.E.L., 1966
Jasper Johns, 1989
Gemini G.E.L., 2005
Glenstone, 1975
Gemini G.E.L., 1972
![Ale Cans [trial proof E]](https://api.nga.gov/iiif/decef2a7-e8fd-4a37-8e42-4c4554cd8688/full/843,/0/default.jpg)
![0 through 9 [trial proof]](https://api.nga.gov/iiif/501bfcf1-7e20-441a-8af2-4802972e106d/full/843,/0/default.jpg)
![Untitled II [trial proof]](https://api.nga.gov/iiif/1f5f6187-99c9-450a-9609-5b5aca9bcbe5/full/843,/0/default.jpg)
![Decoy II [trial proof]](https://api.nga.gov/iiif/448d9a61-9482-4cc3-b12e-a01d93f62e0f/full/843,/0/default.jpg)
![WLS VIII from White Line Squares (Series I) [artist's proof]](https://api.nga.gov/iiif/3fe6f7ec-b458-4bd6-858c-9bd399b9365c/full/843,/0/default.jpg)
![The Seasons [trial proof C]](https://api.nga.gov/iiif/6ee10b3a-9011-4be8-b638-4595de4a0973/full/843,/0/default.jpg)
![Untitled [special proof]](https://api.nga.gov/iiif/d80e7012-c123-4872-ae79-d0b9d25a4eb0/full/843,/0/default.jpg)
![7 [trial proof]](https://api.nga.gov/iiif/15034b97-3866-4ea6-8e17-73e934351710/full/843,/0/default.jpg)
![Zone [trial proof 4]](https://api.nga.gov/iiif/abaee809-c64a-4efa-9539-97ab064e85d9/full/843,/0/default.jpg)