1917
National Gallery of Art, 1939
National Gallery of Art, 1595
National Gallery of Art, 1545
National Gallery of Art, 1937
National Gallery of Art, 1966
National Gallery of Art, 1936
National Gallery of Art, 1840
National Gallery of Art, 1959
National Gallery of Art, 1901
National Gallery of Art, 1978
National Gallery of Art, 1938
![Horse Pawing the Earth [reverse]](https://api.nga.gov/iiif/2d976455-6ff3-4edd-8528-85173f78fafc/full/843,/0/default.jpg)
![Ruler [trial proof]](https://api.nga.gov/iiif/e545e02a-0c94-45c6-91d0-8802c7b5629a/full/843,/0/default.jpg)
