1939
National Gallery of Art, 1786
National Gallery of Art, 1715
National Gallery of Art, 1936
United States Government, 1940
National Gallery of Art, 1834
National Gallery of Art, 1610
National Gallery of Art, 1618
National Gallery of Art, 1622
National Gallery of Art, 1445
National Gallery of Art, 1502
National Gallery of Art, 1835
![Study of the Statue of Diana in the Vatican [verso]](https://api.nga.gov/iiif/111e8770-e79b-4176-a775-3ef2cc01851a/full/843,/0/default.jpg)
![Studies for the Façade of Santa Cristina [recto]](https://api.nga.gov/iiif/585f4082-1885-4ff6-b914-23fdffdaf30c/full/843,/0/default.jpg)
![Nero, 37-68, Roman Emperor 54 [obverse]](https://api.nga.gov/iiif/a62712a4-9103-4fbc-ae07-678b37a1fa0e/full/843,/0/default.jpg)
