1966
National Gallery of Art, 1430
National Gallery of Art, 1729
National Gallery of Art, 1936
National Gallery of Art, 1837
National Gallery of Art, 1941
National Gallery of Art, 1991
National Gallery of Art, 1935
National Gallery of Art, 1861
National Gallery of Art, 1832
National Gallery of Art, 1903
National Gallery of Art, 1938
National Gallery of Art, 1992
![Two Maps I [misc. proof]](https://api.nga.gov/iiif/20418331-3546-4548-afdf-7f9b67f196f6/full/843,/0/default.jpg)
![Studies of boats and a head [verso]](https://api.nga.gov/iiif/6da20c79-fae5-476b-afea-e31bd4dcb0fe/full/843,/0/default.jpg)
