1950–1951
National Gallery of Art, 1845
National Gallery of Art, 2009
National Gallery of Art, 1955
National Gallery of Art, 1500
National Gallery of Art, 1785
National Gallery of Art, 1968
National Gallery of Art, 1995
National Gallery of Art, 1962
National Gallery of Art, 1763
National Gallery of Art, 1990
National Gallery of Art, 1864
National Gallery of Art, 1529
![Untitled [abstract forms] [verso]](https://api.nga.gov/iiif/bfb08d0d-955c-4fd7-b0ec-4f34a7ca7e30/full/843,/0/default.jpg)
![Shields and Helm [reverse]](https://api.nga.gov/iiif/fcaa1f8f-9a37-49ec-9f25-89cab39d1d0b/full/843,/0/default.jpg)