1820
National Gallery of Art, 1511
National Gallery of Art, 1972
National Gallery of Art, 1940
National Gallery of Art, 1877
National Gallery of Art, 1936
National Gallery of Art, 1990
National Gallery of Art, 1935
National Gallery of Art, 1930
National Gallery of Art, 1884
National Gallery of Art, 1890
National Gallery of Art, 1997
National Gallery of Art, 1948
![Detail eines Bärenkopfes (Detail of a Bear's Head) [p. 56]](https://api.nga.gov/iiif/678ce5b3-e255-4560-896b-6a5750ff9b04/full/843,/0/default.jpg)
