1990
National Gallery of Art, 1936
National Gallery of Art, 1903
National Gallery of Art, 1631
National Gallery of Art, 1890
National Gallery of Art, 1565
National Gallery of Art, 1635
National Gallery of Art, 1970
National Gallery of Art, 1983
National Gallery of Art, 1973
National Gallery of Art, 1595
![Study of a Head [verso]](https://api.nga.gov/iiif/7954f5d0-6b41-4d1e-87c1-560ee5dcff05/full/843,/0/default.jpg)
![Light Bulb [trial proof D]](https://api.nga.gov/iiif/35ad584d-a077-40cc-8edb-a5a1d4b70f23/full/843,/0/default.jpg)
