1900
National Gallery of Art, 1609
National Gallery of Art, 1861
National Gallery of Art, 1967
National Gallery of Art, 1975
National Gallery of Art, 1927
National Gallery of Art, 1849
National Gallery of Art, 1627
National Gallery of Art, 1755
National Gallery of Art, 1943
National Gallery of Art, 1884
National Gallery of Art, 1974
National Gallery of Art, 1633
![Driftwood [recto]](https://api.nga.gov/iiif/55e425fc-a007-42ab-bb06-db2a57225a55/full/843,/0/default.jpg)
![Geometrische Formen mit Notizen (Geometric Shapes with Notations) [p. 15]](https://api.nga.gov/iiif/1bf7c8ea-a117-4c8c-87bf-9970ebf1020b/full/843,/0/default.jpg)
