1964–1969
Patrons' Permanent Fund, 1988
Patrons' Permanent Fund, 1917
Lee Friedlander, 1980
Lee and Maria Friedlander, 1936
Patrons' Permanent Fund, 1622
Lee Friedlander, 1966
Lee Friedlander, 1963
Patrons' Permanent Fund, 1858
Patrons' Permanent Fund, 1976
Patrons' Permanent Fund, 1987
Patrons' Permanent Fund, 1965
![Untitled [trial proof of 1st state]](https://api.nga.gov/iiif/f7e1bf9c-9a89-4413-9e45-958df9a928c3/full/843,/0/default.jpg)
![Flagstones and Flagstones [trial proof 1]](https://api.nga.gov/iiif/c7c51d6d-0e8e-416f-8d46-c6590299f156/full/843,/0/default.jpg)
![The Seasons (Spring) [state proof of 6th state]](https://api.nga.gov/iiif/db305e5c-43c6-444d-9b2a-78899e4dc1c4/full/843,/0/default.jpg)
![Two Maps I [working proof]](https://api.nga.gov/iiif/ec5075de-03a3-4850-afca-2bf81e8bc185/full/843,/0/default.jpg)