1633
Rosenwald, Lessing Julius, 1490
National Gallery of Art, 1945
National Gallery of Art, 1656
Rosenwald, Lessing Julius, 1634
Rosenwald, Lessing Julius, 1852
Rosenwald, Lessing Julius, 1844
Rosenwald, Lessing Julius, 1825
National Gallery of Art, 1938
National Gallery of Art, 1879
National Gallery of Art, 1836
National Gallery of Art, 1893
National Gallery of Art, 1936
![The Mass of Saint Gregory [recto]](https://api.nga.gov/iiif/4d23fcb3-6c20-4387-b54f-a89d717bd134/full/843,/0/default.jpg)
