1978
Robert Adams, 1980
Patrons' Permanent Fund, 1987
Patrons' Permanent Fund, 1994
Robert Adams, 1973
Patrons' Permanent Fund, 1973
Robert Adams, 2004
Patrons' Permanent Fund, 1964
Patrons' Permanent Fund, 1989
Dan and Mary Solomon, 1969
Patrons' Permanent Fund, 1976
Patrons' Permanent Fund, 1967
Patrons' Permanent Fund, 1966
![Untitled [trial proof G]](https://api.nga.gov/iiif/4daedf10-2d54-44f9-b3e1-6c25c8d786ae/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [C panel, trial proof 6]](https://api.nga.gov/iiif/c1346720-1220-455e-b848-0d39183464f7/full/843,/0/default.jpg)
![The Seasons (Summer) [state proof of 16th state]](https://api.nga.gov/iiif/cdd786fc-dbce-42a9-8c9d-9e85d920b47b/full/843,/0/default.jpg)
![Leg (a) [trial proof 4]](https://api.nga.gov/iiif/915df87d-9072-48a6-9eb8-fae3b9d1d4cd/full/843,/0/default.jpg)
![Ruler [misc. proof]](https://api.nga.gov/iiif/71717dbc-8a1e-44c1-82a3-cebcb9b3901a/full/843,/0/default.jpg)