1930–1939
National Gallery of Art, 1965
National Gallery of Art, 1942
National Gallery of Art, 1856
National Gallery of Art, 1628
National Gallery of Art, 1948
National Gallery of Art, 1976
National Gallery of Art, 1939
National Gallery of Art, 1899
National Gallery of Art, 1800
National Gallery of Art, 1798
National Gallery of Art, 1958
National Gallery of Art, 1938
![Flagstones (a) [trial proof 1]](https://api.nga.gov/iiif/1c96e21f-d0cc-41db-94a6-48a60e7ef83b/full/843,/0/default.jpg)
