BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 03.11.1893
BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 15.11.1893
BRIEF [O.A.] Sutton, A. R. Author: Sutton, A. R. Recipient: Haeckel, Ernst Corporation: The Ernst Haeckel Club Dating: 26.06.1893
BRIEF [O.A.] Goonewardene, C. J. Author: Goonewardene, C. J. Recipient: Haeckel, Ernst Dating: 17.02.1893
BRIEF [O.A.] Suttner-Kinsky, Baronin Bertha von Author: Suttner-Kinsky, Baronin Bertha von Recipient: Unbekannt Corporation: Oesterreichische Gesellschaft der Friedensfreunde Dating: 13.06.1893
POSTKARTE Gadeau de Kerville, Henri Author: Gadeau de Kerville, Henri Recipient: Haeckel, Ernst Dating: 01.05.1893
