1972
National Gallery of Art, 1551
National Gallery of Art, 1899
National Gallery of Art, 1884
National Gallery of Art, 1642
National Gallery of Art, 1999
National Gallery of Art, 1939
National Gallery of Art, 1622
National Gallery of Art, 1506
National Gallery of Art, 1935
National Gallery of Art, 1896
National Gallery of Art, 1987
National Gallery of Art, 1890
![Skizze für Frühe Menschen (Sketch for Early Men) [p. 8]](https://api.nga.gov/iiif/898d8730-7070-4f4d-9327-450588728cc4/full/843,/0/default.jpg)
