1939
National Gallery of Art, 1938
National Gallery of Art, 1700
National Gallery of Art, 1936
National Gallery of Art, 1480
National Gallery of Art, 1917
National Gallery of Art, 1958
National Gallery of Art, 1907
National Gallery of Art, 1899
National Gallery of Art, 1960
National Gallery of Art, 1975
National Gallery of Art, 1908
![Le conchiglie [The Shells (in Petrucci's Study)]](https://api.nga.gov/iiif/9d4360e9-bf92-4ed3-a2db-118062cfda5f/full/843,/0/default.jpg)
![Armed Figure Standing on a Prostrate Wolf [reverse]](https://api.nga.gov/iiif/5c696842-ebdb-4671-bdef-481b9435ea63/full/843,/0/default.jpg)
