1975
National Gallery of Art, 1794
National Gallery of Art, 1912
National Gallery of Art, 1935
National Gallery of Art, 1936
National Gallery of Art, 1854
National Gallery of Art, 1976
National Gallery of Art, 1860
National Gallery of Art, 1623
National Gallery of Art, 1987
National Gallery of Art, 1630
National Gallery of Art, 1922
![Flagstones (b) [trial proof 2]](https://api.nga.gov/iiif/b1ff268d-e5cd-4005-9aab-79cd68ad681d/full/843,/0/default.jpg)
![Head of a Boy [Testa di ragazzo]](https://api.nga.gov/iiif/9f448316-95ae-48da-a606-cbbe16ddcca4/full/843,/0/default.jpg)