1640
National Gallery of Art, 1755
National Gallery of Art, 1764
National Gallery of Art, 1938
National Gallery of Art, 1999
National Gallery of Art, 1941
National Gallery of Art, 1884
National Gallery of Art, 1962
National Gallery of Art, 1896
National Gallery of Art, 1903
National Gallery of Art, 1830
National Gallery of Art, 1740
![Two Cow's Heads [verso]](https://api.nga.gov/iiif/b0e65972-ba4c-4686-b78f-d69803a06555/full/843,/0/default.jpg)
