1862–1869
National Gallery of Art, 1895
National Gallery of Art, 1964
National Gallery of Art, 1875
National Gallery of Art, 1936
National Gallery of Art, 1925
National Gallery of Art, 1994
National Gallery of Art, 1966
National Gallery of Art, 1990
National Gallery of Art, 1969
National Gallery of Art, 1604
National Gallery of Art, 1684
National Gallery of Art, 1806
![Man with Snake (Blue and Yellow) [special proof]](https://api.nga.gov/iiif/fb783098-4029-49c3-b22f-1669a1ff9690/full/843,/0/default.jpg)
![Figure 1 [trial proof]](https://api.nga.gov/iiif/d19b56d3-b9eb-4103-895a-fb7a7cd59326/full/843,/0/default.jpg)
