1978
Patrons' Permanent Fund, 1928
Patrons' Permanent Fund, 1987
Patrons' Permanent Fund, 1969
Nicholas Nixon, 1997
Nicholas Nixon, 2020
Patrons' Permanent Fund, 1920
Patrons' Permanent Fund, 1966
Patrons' Permanent Fund, 1947
Patrons' Permanent Fund, 1971
Patrons' Permanent Fund, 1775
![The Seasons (Summer) [trial proof]](https://api.nga.gov/iiif/d7a57a51-d6b0-49a2-b320-d631a9648d89/full/843,/0/default.jpg)
![Figure 8 [working proof]](https://api.nga.gov/iiif/a47feac4-f09e-47d8-98a9-69c3936a89c4/full/843,/0/default.jpg)
![Two Maps I [trial proof]](https://api.nga.gov/iiif/425534b5-f85e-42e8-8184-aa4305d7bc6c/full/843,/0/default.jpg)
![Untitled [working proof]](https://api.nga.gov/iiif/d7c2f1d5-d788-4d36-81b8-d95e47efd6bd/full/843,/0/default.jpg)
