1967
National Gallery of Art, 1855
National Gallery of Art, 1817
National Gallery of Art, 1986
National Gallery of Art, 1884
National Gallery of Art, 1941
National Gallery of Art, 1575
National Gallery of Art, 1888
National Gallery of Art, 1935
National Gallery of Art, 1862
National Gallery of Art, 1937
National Gallery of Art, 1966
![Heads of a Boy and a Man (Self-Portrait?) [verso]](https://api.nga.gov/iiif/ab93dd93-ea21-4f1b-a60f-df53032b3e0e/full/843,/0/default.jpg)
![Two Maps I [trial proof]](https://api.nga.gov/iiif/09ea197d-e9c9-4940-b850-e633ea462150/full/843,/0/default.jpg)
