Federer, Heinrich
born 6. October 1866 in Brienz; died 29. April 1928 in ZürichBrief von Heinrich Federer an Hans Vaihinger, 23.04.1917 [23.04.1917]
Zürich, 23.04.1917 [23.04.1917]Schoenaich, Paul von
born 16. February 1866 in Klein-Tromnau, Westpreußen; died 7. January 1954 in Reinfeld (Holstein)Brief von Paul von Schoenaich an Hans Vaihinger, 08.12.1931 [08.12.1931]
Reinfeld, 08.12.1931 [08.12.1931]