1827
Patrons' Permanent Fund, 2020
Patrons' Permanent Fund, 2000
Stiftung Ratjen, 1828
Patrons' Permanent Fund, 1947
Patrons' Permanent Fund, 1977
Patrons' Permanent Fund, 1964
Patrons' Permanent Fund, 1981
Patrons' Permanent Fund, 1992
Patrons' Permanent Fund, 1987
Patrons' Permanent Fund, 1975
![Untitled [trial proof]](https://api.nga.gov/iiif/58a38e4f-515e-43f9-ae06-20d403937248/full/843,/0/default.jpg)
![Periscope [trial proof]](https://api.nga.gov/iiif/9f1feb0c-0d7e-493b-a831-2488efa4aa65/full/843,/0/default.jpg)
![The Seasons (Winter) [state proof of 2nd state]](https://api.nga.gov/iiif/42c20a05-3713-4347-ac3b-6601f0eaf3b6/full/843,/0/default.jpg)
![3 [trial proof]](https://api.nga.gov/iiif/e5d8c14c-a9ad-4a94-9b74-ceaac0e74e85/full/843,/0/default.jpg)