signed by artist, lower right, in graphite: Gangolf; by artist, lower left, in graphite: Epr d'art.
Marks and Labels
stamp, verso center, in black ink: R
(Jörg Maass Kunsthandel, Berlin); Ruth Cole Kainen [1922-2009], Washington D.C. (Lugt 4739), purchased November 26, 2005; gift to NGA, 2012.
- Rathenau, Ernest. Im Memoriam Paul Gangolf. Berlin: Euphorin Verlag, 1964, no. 3.