1955
National Gallery of Art, 1915
National Gallery of Art, 1759
National Gallery of Art, 1944
National Gallery of Art, 1939
National Gallery of Art, 1868
National Gallery of Art, 1937
National Gallery of Art, 1940
National Gallery of Art, 1961
National Gallery of Art, 1884
Frank, Robert, 1941
![begonnene Skizze, wohl zweier Köpfe (Initial Sketch) [p. 15]](https://api.nga.gov/iiif/4cf44ce6-b646-498d-9e46-685543c62259/full/843,/0/default.jpg)
