1966
Patrons' Permanent Fund, 1970
National Gallery of Art, 1784
National Gallery of Art, 1937
National Gallery of Art, 1764
National Gallery of Art, 1595
National Gallery of Art, 1886
National Gallery of Art, 1926
National Gallery of Art, 1565
National Gallery of Art, 1938
National Gallery of Art, 1944
National Gallery of Art, 1935
![Ruler [misc. proof]](https://api.nga.gov/iiif/c119f093-606a-4ac7-9cf6-5aac9ad38537/full/843,/0/default.jpg)
![Light Bulb [working proof]](https://api.nga.gov/iiif/882b1de3-7d09-4363-b3c9-55cc8e9ffae8/full/843,/0/default.jpg)
