1950–1960
National Gallery of Art, 1913
National Gallery of Art, 1515
National Gallery of Art, 1991
National Gallery of Art, 1935
National Gallery of Art, 1965
National Gallery of Art, 1984
National Gallery of Art, 1936
National Gallery of Art, 1940
National Gallery of Art, 1939
National Gallery of Art, 1977
National Gallery of Art, 1971
![Two Sunsets (One with Square Blue Moon) [special proof]](https://api.nga.gov/iiif/7f86a87e-70ef-4ea0-b787-cc4fcd92e717/full/843,/0/default.jpg)
