1621
National Gallery of Art, 1951
National Gallery of Art, 1968
National Gallery of Art, 1935
National Gallery of Art, 1863
National Gallery of Art, 1896
National Gallery of Art, 1907
National Gallery of Art, 1958
National Gallery of Art, 1995
National Gallery of Art, 1973
National Gallery of Art, 1936
National Gallery of Art, 1960
![Gray Alphabets [working proof]](https://api.nga.gov/iiif/c7d881b5-8fca-4146-b30c-5820b30cbccc/full/843,/0/default.jpg)
![Wrapped Reichstag, Project for Berlin [top panel]](https://api.nga.gov/iiif/bf1b2b64-2549-48fd-a112-ae3d9827cfba/full/843,/0/default.jpg)
