Kelsen, Hans
born 11. October 1881 in Prag; died 19. April 1973 in Berkeley, Calif.Brief von Hans Kelsen an Hans Vaihinger, 19.05.1917 [19.05.1917]
Wien, 19.05.1917 [19.05.1917]Keyserling, Hermann
born 20. July 1880 in Könno; died 26. April 1946 in InnsbruckBrief von Hermann Keyserling an Hans Vaihinger, 13.04.1920
Friedrichsruh ; Darmstadt, 13.04.1920Brief von Hermann Keyserling an Hans Vaihinger, 04.05.1922
Darmstadt, 04.05.1922Brief von Hermann Keyserling an Hans Vaihinger, 23.09.1922
Darmstadt, 23.09.1922