1997
National Gallery of Art, 1737
National Gallery of Art, 1543
National Gallery of Art, 1864
National Gallery of Art, 1939
National Gallery of Art, 1935
National Gallery of Art, 1940
National Gallery of Art, 1463
National Gallery of Art, 1914
National Gallery of Art, 1800
National Gallery of Art, 1440
National Gallery of Art, 1847
![Study VI, New York Harbor [verso, #28, brown]](https://api.nga.gov/iiif/a1a565dc-fc7e-4b54-a712-b20cc573cef6/full/843,/0/default.jpg)
![Caspar von Mulheim, 1506-1570/1571, Counselor of Cologne [obverse]](https://api.nga.gov/iiif/9129798e-69f0-48fd-94c5-75f53e434660/full/843,/0/default.jpg)
![Prudence [reverse]](https://api.nga.gov/iiif/8e65af1b-cab6-48df-8fb1-bbdc64c7c25d/full/843,/0/default.jpg)
