1925
National Gallery of Art, 1999
National Gallery of Art, 1936
National Gallery of Art, 2007
National Gallery of Art, 1855
National Gallery of Art, 1515
National Gallery of Art, 1976
National Gallery of Art, 1935
National Gallery of Art, 1550
National Gallery of Art, 1955
National Gallery of Art, 1949
National Gallery of Art, 1933
![Flagstones (a) [trial proof 5]](https://api.nga.gov/iiif/ea997b73-de3d-47a3-ba41-00e82c6c95fd/full/843,/0/default.jpg)
