1947–1957
National Gallery of Art, 1808
National Gallery of Art, 1971
National Gallery of Art, 1635
National Gallery of Art, 1967
National Gallery of Art, 1956
National Gallery of Art, 1968
National Gallery of Art, 1930
National Gallery of Art, 1989
National Gallery of Art, 1800
National Gallery of Art, 1937
National Gallery of Art, 1993
National Gallery of Art, 1997
![Leo [sketch (on Mylar)]](https://api.nga.gov/iiif/55d37ab4-9d60-4318-af22-4b852391c2a4/full/843,/0/default.jpg)