1980–1981
National Gallery of Art, 1927
National Gallery of Art, 1782
National Gallery of Art, 1968
National Gallery of Art, 1837
National Gallery of Art, 1965
National Gallery of Art, 1819
National Gallery of Art, 1903
National Gallery of Art, 1676
National Gallery of Art, 1911
National Gallery of Art, 1972
National Gallery of Art, 1951
National Gallery of Art, 1981
![Drypoint Iota [special proof]](https://api.nga.gov/iiif/9b263b97-cc79-4100-b2a1-3b520bdb0db2/full/843,/0/default.jpg)
![Untitled [2] from 8 Erfahrungen (8 Experiences)](https://api.nga.gov/iiif/91860c65-083d-4f93-8120-231eaa0509a4/full/843,/0/default.jpg)