1996
National Gallery of Art, 1997
National Gallery of Art, 1937
National Gallery of Art, 1936
National Gallery of Art, 1920
National Gallery of Art, 1882
National Gallery of Art, 1400
National Gallery of Art, 1965
National Gallery of Art, 1922
National Gallery of Art, 1446
National Gallery of Art, 1954
National Gallery of Art, 1570
National Gallery of Art, 1972
![Umbria Verde [working proof 10]](https://api.nga.gov/iiif/0c26c473-780c-4625-9677-66950508c017/full/843,/0/default.jpg)
![Green Angel 2 [trial proof 19]](https://api.nga.gov/iiif/caa05b99-0708-42b0-817d-3ac91b19118b/full/843,/0/default.jpg)
![The Castle of Rimini [reverse]](https://api.nga.gov/iiif/f1eef050-27c3-479d-a618-ccabd818b0e6/full/843,/0/default.jpg)
![Zone [working proof]](https://api.nga.gov/iiif/9c42b76d-c997-468c-aed0-01333e425774/full/843,/0/default.jpg)