1971
National Gallery of Art, 1972
National Gallery of Art, 1840
National Gallery of Art, 1937
National Gallery of Art, 1927
National Gallery of Art, 1450
National Gallery of Art, 1951
National Gallery of Art, 1926
National Gallery of Art, 1899
National Gallery of Art, 1529
National Gallery of Art, 1938
National Gallery of Art, 1941
![Decoy [trial proof]](https://api.nga.gov/iiif/334d6003-c022-44ed-9988-fc29aab44c3a/full/843,/0/default.jpg)
![Two Flags [trial proof]](https://api.nga.gov/iiif/6a3913a1-38bd-46b8-abbe-08fbf24c7aae/full/843,/0/default.jpg)
![Meereslandschaft, Farbangaben (Seascape with Notations) [p. 116]](https://api.nga.gov/iiif/f153e681-f890-4731-ab8c-4f6e54d6610e/full/843,/0/default.jpg)
