1969
National Gallery of Art, 1525
National Gallery of Art, 1937
National Gallery of Art, 1960
National Gallery of Art, 1688
National Gallery of Art, 1968
National Gallery of Art, 1925
National Gallery of Art, 1622
National Gallery of Art, 1936
National Gallery of Art, 1753
Patrons' Permanent Fund, 1969
National Gallery of Art, 1480
National Gallery of Art, 1931
![Unicorn in a Landscape [reverse]](https://api.nga.gov/iiif/4933a997-28c0-46da-b33c-e061777ddc99/full/843,/0/default.jpg)
![Untitled, Second State (Ruler) [trial proof]](https://api.nga.gov/iiif/cd846252-9535-4fb3-9369-f049f3fbfb5c/full/843,/0/default.jpg)
