1940
National Gallery of Art, 2005
National Gallery of Art, 1937
National Gallery of Art, 1976
National Gallery of Art, 1890
National Gallery of Art, 1935
National Gallery of Art, 1945
National Gallery of Art, 1621
National Gallery of Art, 1939
National Gallery of Art, 1938
National Gallery of Art, 1960
National Gallery of Art, 1965
National Gallery of Art, 1956
![Flagstones (a) [trial proof 7]](https://api.nga.gov/iiif/1c7e9f7b-56f6-46a9-ac37-8976a1707941/full/843,/0/default.jpg)
