1950
National Gallery of Art, 1968
National Gallery of Art, 1904
National Gallery of Art, 1941
National Gallery of Art, 1569
National Gallery of Art, 1540
National Gallery of Art, 1750
National Gallery of Art, 1613
National Gallery of Art, 1539
National Gallery of Art, 1815
National Gallery of Art, 1935
National Gallery of Art, 1932
National Gallery of Art, 1884
![Cavalry Charge [reverse]](https://api.nga.gov/iiif/e1ed3798-1db2-47cd-916e-b05bbe9e35ec/full/843,/0/default.jpg)
![Skizze für Frühe Menschen, Notizen (Sketch for Early Men with Notation) [p. 11]](https://api.nga.gov/iiif/60d74a8b-4be3-4bbb-a825-631e46e1574b/full/843,/0/default.jpg)