2008
National Gallery of Art, 1500
National Gallery of Art, 1956
National Gallery of Art, 1938
National Gallery of Art, 1983
Corcoran Gallery of Art, 1840
National Gallery of Art, 1884
National Gallery of Art, 1952
National Gallery of Art, 1939
National Gallery of Art, 1999
National Gallery of Art, 1899
National Gallery of Art, 1944
National Gallery of Art, 1934
![Entwurf für ein Triptychon (Sketch for a Triptych) [p. 26]](https://api.nga.gov/iiif/edd29006-e0fb-4b96-8c73-cd1da470e4d5/full/843,/0/default.jpg)
![Untitled (Embassies) [trial proof of 2nd state]](https://api.nga.gov/iiif/1fcee5ed-a9d7-40ad-a637-9ed809486b9d/full/843,/0/default.jpg)
