1990
Patrons' Permanent Fund, 1501
Patrons' Permanent Fund, 1928
Patrons' Permanent Fund, 1973
Patrons' Permanent Fund, 1922
Patrons' Permanent Fund, 1970
Patrons' Permanent Fund, 1969
Robert Adams, 1999
Dan and Mary Solomon, 1961
Dan and Mary Solomon, 1940
Patrons' Permanent Fund, 1912
Robert Adams, 2004
![Four Panels from Untitled 1972 [D panel, trial proof 24]](https://api.nga.gov/iiif/93c56b01-ac98-42b9-a77f-a3f21f25509b/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [D panel, working proof 2]](https://api.nga.gov/iiif/115d1c97-1fd4-46bf-8c28-e6dde9c9d8ec/full/843,/0/default.jpg)
