1838
National Gallery of Art, 1936
National Gallery of Art, 1940
National Gallery of Art, 1654
National Gallery of Art, 1937
National Gallery of Art, 1628
National Gallery of Art, 1939
National Gallery of Art, 1935
National Gallery of Art, 1625
National Gallery of Art, 1884
National Gallery of Art, 1595
National Gallery of Art, 1598
National Gallery of Art, 1745
![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)
