1987
National Gallery of Art, 1935
National Gallery of Art, 1929
Patrons' Permanent Fund, 1971
National Gallery of Art, 1895
Patrons' Permanent Fund, 1976
National Gallery of Art, 1966
National Gallery of Art, 1637
National Gallery of Art, 1930
National Gallery of Art, 1995
National Gallery of Art, 1976
National Gallery of Art, 1939
National Gallery of Art, 1979
![The Seasons (Spring) [trial proof]](https://api.nga.gov/iiif/14a239e1-783d-4ff1-acf5-efa3528a245d/full/843,/0/default.jpg)
![Untitled I [working proof]](https://api.nga.gov/iiif/ac8c7668-f3aa-493d-8ac0-b2d6ef444182/full/843,/0/default.jpg)
![#6 (after 'Untitled 1975') [progressive proof 13]](https://api.nga.gov/iiif/dae4df82-2617-4b76-84ce-da1bf69a5eb4/full/843,/0/default.jpg)
![Agean [special proof]](https://api.nga.gov/iiif/e552291a-51c3-458b-bb57-33eea9abfc3a/full/843,/0/default.jpg)