1972
Corcoran Gallery of Art, 1856
Corcoran Gallery of Art, 1859
Corcoran Gallery of Art, 1868
Corcoran Gallery of Art, 1963
Corcoran Gallery of Art, 1875
Josef Albers, 1971
Corcoran Gallery of Art, 1990
Corcoran Gallery of Art, 1880
Corcoran Gallery of Art, 1964
Corcoran Gallery of Art, 1802
Josef Albers, 1965
Corcoran Gallery of Art, 1974
![The Alps [recto]](https://api.nga.gov/iiif/5d2ca2b0-7d84-42fa-be54-71ec2f51938a/full/843,/0/default.jpg)
![Light of Knowledge [reverse]](https://api.nga.gov/iiif/ebc6b978-88ae-42e7-a30b-6e3c51490fb3/full/843,/0/default.jpg)
