1971–1972
National Gallery of Art, 1936
National Gallery of Art, 1532
National Gallery of Art, 1612
National Gallery of Art, 1935
National Gallery of Art, 1615
Patrons' Permanent Fund, 1971
National Gallery of Art, 1737
National Gallery of Art, 1938
National Gallery of Art, 1604
Gemini G.E.L., 1971
National Gallery of Art, 1922
![Good Time Charley II [trial proof]](https://api.nga.gov/iiif/3e6a4d51-f16d-42c7-829b-3169b5579d3f/full/843,/0/default.jpg)
![Delaware Crossing [color trial proof]](https://api.nga.gov/iiif/2ff91d54-7f72-4d2a-a26a-cf3b4aa79feb/full/843,/0/default.jpg)
