1974
National Gallery of Art, 1973
National Gallery of Art, 1472
National Gallery of Art, 1914
National Gallery of Art, 1895
National Gallery of Art, 1937
National Gallery of Art, 1897
National Gallery of Art, 1889
National Gallery of Art, 1412
National Gallery of Art, 1956
National Gallery of Art, 1935
National Gallery of Art, 1996
![Ercole I d'Este, 1431-1505, Duke of Ferrara, Modena, and Reggio 1471 [obverse]](https://api.nga.gov/iiif/e36de80b-e494-4c81-adfd-dfaef8b04dbb/full/843,/0/default.jpg)
![Zwei Skizzen mit Titeln (Two Sketches Titled) [p. 20]](https://api.nga.gov/iiif/a612e7c6-2e5e-41df-b1af-cb42c194acb8/full/843,/0/default.jpg)
