1869
National Gallery of Art, 1769
National Gallery of Art, 1832
National Gallery of Art, 1966
National Gallery of Art, 1935
National Gallery of Art, 1786
National Gallery of Art, 1955
National Gallery of Art, 1808
National Gallery of Art, 1924
National Gallery of Art, 1879
National Gallery of Art, 1872
National Gallery of Art, 1971
![Painting with Two Balls (Grays) [trial proof]](https://api.nga.gov/iiif/7ab52c2a-0d53-4689-9fda-e495fc518367/full/843,/0/default.jpg)