1933
National Gallery of Art, 1937
National Gallery of Art, 1967
National Gallery of Art, 1962
National Gallery of Art, 1879
National Gallery of Art, 1390
National Gallery of Art, 1619
National Gallery of Art, 1981
National Gallery of Art, 1778
National Gallery of Art, 1919
National Gallery of Art, 1936
National Gallery of Art, 1608
![Painting with Two Balls I [artist's proof]](https://api.nga.gov/iiif/d13d6177-e56c-431b-bcd5-77338df196ca/full/843,/0/default.jpg)
![Periscope [state proof of 6th state]](https://api.nga.gov/iiif/125a0c2f-2e0b-4ab1-8689-8503cfc65859/full/843,/0/default.jpg)
