KARTE Delprat, Theodore; Delprat, Cornelia Wilhelmina, geb. Panhuys Author: Delprat, Theodore; Delprat, Cornelia Wilhelmina, geb. Panhuys Recipient: Haeckel, Ernst Dating: 25.12.1913
KARTE Huschke, Konrad; Huschke, Mathilde Author: Huschke, Konrad; Huschke, Mathilde Recipient: Haeckel, Ernst Dating: 23.03.1913
KARTE Weber, Max; Weber, Anna, geb. van Bosse Author: Weber, Max; Weber, Anna, geb. van Bosse Recipient: Haeckel, Ernst Dating: 01.01.1913