Collection Felix Benjamin, Berlin; [...] - a withdrawal due to Nazi persecution cannot be excluded; whereabouts unknown
Literature / Source
Wilko von Abercron, Eugen Spiro. 1874 Breslau-1972 New York. Spiegel seines Jahrhunderts. Alsbach 1993. S. 160, 220; Otto Brautoff, Eugen Spiro. In: Velhagen & Klasings Monatshefte. 36(1921/1922) 2. Bd. S. 289-304, hier S. 295
