1974
National Gallery of Art, 1936
National Gallery of Art, 1935
National Gallery of Art, 1893
National Gallery of Art, 1595
National Gallery of Art, 1475
National Gallery of Art, 1938
National Gallery of Art, 1628
National Gallery of Art, 1610
National Gallery of Art, 1894
National Gallery of Art, 1959
National Gallery of Art, 1941
National Gallery of Art, 1575
![Untitled (Skull and Heart) [left half of 2-part drawing, see 1986.26.221-222]](https://api.nga.gov/iiif/3bc17d1c-811f-4842-b9a1-b2ba1f8bf574/full/843,/0/default.jpg)
![Gregory XIII (Ugo Buoncompagni, 1502-1585), Pope 1572 [obverse]](https://api.nga.gov/iiif/c978870c-e444-4f1e-8eb1-748758ad2abd/full/843,/0/default.jpg)