1994
Patrons' Permanent Fund, 1969
National Gallery of Art, 1968
National Gallery of Art, 1802
National Gallery of Art, 1935
National Gallery of Art, 1852
National Gallery of Art, 1936
National Gallery of Art, 1612
National Gallery of Art, 1465
National Gallery of Art, 1990
National Gallery of Art, 1974
National Gallery of Art, 1875
National Gallery of Art, 1958
![Green Angel 2 Experimental Lithos [trial proof]](https://api.nga.gov/iiif/15a61677-b733-45aa-a448-66918fc440c6/full/843,/0/default.jpg)
![Figure 5 [working proof]](https://api.nga.gov/iiif/e6d60deb-19f5-4b34-baee-8be39d5ea772/full/843,/0/default.jpg)
