lower right in graphite: A Illies
Unidentified mark (two overlapping "B" initials in yellow ink). (Martin Sumers Graphics, New York); Ruth Kainen [1922-2009], Washington, D.C. (Lugt 4740), purchased April 25, 1979; Gift to NGA, 2012.
- Modern German Prints and Drawings from the Kainen Collection, National Gallery of Art, Washington, DC, 2014.
- Schiefler, Gustav. Das graphische Werk von Arthur Illies. Hamburg, 1970: no.62.