1891
National Gallery of Art, 1600
National Gallery of Art, 1931
National Gallery of Art, 1990
National Gallery of Art, 1977
National Gallery of Art, 1930
National Gallery of Art, 2015
National Gallery of Art, 1962
National Gallery of Art, 1912
National Gallery of Art, 1858
National Gallery of Art, 2008
National Gallery of Art, 1967
![#1 from Nine Drypoints and Etchings [artist's proof]](https://api.nga.gov/iiif/02b22a0f-a5b9-4e4a-83df-6b495970d6d6/full/843,/0/default.jpg)
![Human Structures and the Light of Consciousness for Obama [special proof]](https://api.nga.gov/iiif/ca53eb23-29bf-4c04-a877-e290a9ae3b9d/full/843,/0/default.jpg)
![Watchman [working proof]](https://api.nga.gov/iiif/76fc40be-48de-49c4-a84a-bef2d0bea4f3/full/843,/0/default.jpg)