BRIEF OHNE UMSCHLAG Fürbringer, Max Author: Fürbringer, Max Recipient: Haeckel, Ernst Dating: 18.08.1900
BRIEF OHNE UMSCHLAG Fürbringer, Max Author: Fürbringer, Max Recipient: Haeckel, Ernst Dating: 25.08.1900
BRIEF OHNE UMSCHLAG Dodel-Port, Arnold Author: Dodel-Port, Arnold Recipient: Haeckel, Ernst Dating: 03.01.1900
BRIEF OHNE UMSCHLAG Dodel-Port, Arnold Author: Dodel-Port, Arnold Recipient: Haeckel, Ernst Dating: 27.05.1900
BRIEF OHNE UMSCHLAG Sarasin, Fritz Author: Sarasin, Fritz Recipient: Haeckel, Ernst Dating: 20.03.1900
BRIEF OHNE UMSCHLAG Kraigher-Porges, Josepha Author: Kraigher-Porges, Josepha Recipient: Haeckel, Ernst Dating: 05.10.1900
BRIEF OHNE UMSCHLAG Reinhardt, L... Author: Reinhardt, L... Recipient: Haeckel, Ernst Dating: 08.06.1900
BRIEF OHNE UMSCHLAG Bär-Ulrich, Marie Author: Bär-Ulrich, Marie Recipient: Haeckel, Ernst Dating: 22.03.1900