2001
National Gallery of Art, 1897
National Gallery of Art, 1879
National Gallery of Art, 1943
National Gallery of Art, 1976
National Gallery of Art, 1908
National Gallery of Art, 1937
National Gallery of Art, 1936
National Gallery of Art, 1956
National Gallery of Art, 1837
National Gallery of Art, 1884
National Gallery of Art, 1951
National Gallery of Art, 1862
![#6 (after 'Untitled 1975') [progressive proof 2]](https://api.nga.gov/iiif/21449e8a-3c47-418e-bdd1-e1f01ce02806/full/843,/0/default.jpg)
![Seiltänzer (Tightrope Walker) [p. 2]](https://api.nga.gov/iiif/7e9ebf9d-7ddd-4da4-be3d-c2a727bb3652/full/843,/0/default.jpg)
