Feldkeller, Paul
born 14. December 1889 in Danzig; died 20. January 1972Brief von Paul Feldkeller an Hans Vaihinger, 16.11.1920 [16.11.1920]
Schönwalde, 16.11.1920 [16.11.1920]Hegenwald, Hermann
born 1. May 1884Brief von Hermann Hegenwald an Hans Vaihinger, 12.05.1912
Königsberg, 12.05.1912