BRIEF OHNE UMSCHLAG Kraefft, Gustav Author: Kraefft, Gustav Recipient: Haeckel, Ernst Dating: 24.11.1894
BRIEF OHNE UMSCHLAG Blumenthal, August Author: Blumenthal, August Recipient: Haeckel, Ernst Corporation: Downing’s American Despatch General Agent for Germany and Austria August Blumenthal Hamburg Dating: 28.11.1894
BRIEF OHNE UMSCHLAG R. Friedländer & Sohn, Buchhandlung Author: R. Friedländer & Sohn, Buchhandlung Recipient: Haeckel, Ernst Dating: 16.11.1894
BRIEF OHNE UMSCHLAG Eggeling, Heinrich von Author: Eggeling, Heinrich von Recipient: Haeckel, Ernst Dating: 16.01.1894
BRIEF OHNE UMSCHLAG Ritter, Paul von Author: Ritter, Paul von Recipient: Haeckel, Ernst Dating: 24.03.1894
BRIEF OHNE UMSCHLAG Knoblauch, Julius Author: Knoblauch, Julius Recipient: Haeckel, Ernst Dating: 06.12.1894
