1950–1951
National Gallery of Art, 1495
National Gallery of Art, 1865
National Gallery of Art, 1782
National Gallery of Art, 1929
National Gallery of Art, 1883
National Gallery of Art, 1969
National Gallery of Art, 1956
National Gallery of Art, 1514
National Gallery of Art, 1861
National Gallery of Art, 1975
National Gallery of Art, 1896
National Gallery of Art, 1947
![Figure of Philosophy with a Ladder [reverse]](https://api.nga.gov/iiif/c996fbf2-a80d-47d1-9770-15520b3ceedb/full/843,/0/default.jpg)
![Figure 0 [trial proof]](https://api.nga.gov/iiif/661c84f0-6e24-46fe-8374-935a306e9f56/full/843,/0/default.jpg)
