1999
National Gallery of Art, 1964
National Gallery of Art, 1909
National Gallery of Art, 1941
National Gallery of Art, 1896
National Gallery of Art, 1475
National Gallery of Art, 1530
National Gallery of Art, 1993
National Gallery of Art, 1948
National Gallery of Art, 1225
National Gallery of Art, 1884
National Gallery of Art, 1867
National Gallery of Art, 1935
![Letter to the Mother [left]](https://api.nga.gov/iiif/77fb0118-db4f-4cd7-9fd3-ad50ccc7ae48/full/843,/0/default.jpg)
![Zwei bezeichnete Skizzen (Two Sketches with Inscriptions) [p. 31]](https://api.nga.gov/iiif/2227e448-d981-4663-82e8-1435d8265225/full/843,/0/default.jpg)
