signed by artist, lower right, in graphite: Gangolf; by artist, lower left, in graphite: 9
Marks and Labels
stamp, verso lower center, in black ink: R
(Jörg Maass Kunsthandel, Berlin); Ruth Cole Kainen [1929-2009], Washington, D.C. (Lugt 4739), purchased November 2, 2000; gift to NGA, 2012.
- Rathenau, Ernest. Im Memoriam Paul Gangolf. Berlin: Euphorin Verlag, 1964, no. 10.