TELEGRAMM Schmöger, Carl August Author: Schmöger, Carl August Recipient: Haeckel, Ernst Dating: 16.02.1912
TELEGRAMM Krupp, Bertha (und Familie) Author: Krupp, Bertha (und Familie) Recipient: Haeckel, Ernst Dating: 16.02.1894
TELEGRAMM Recipient: Haeckel, Ernst Corporation: Deutscher Monistenbund, Ortsgruppe Erfurt Dating: 29.08.1911
TELEGRAMM Wiedemann, Feodor Author: Wiedemann, Feodor Recipient: Schmidt, Heinrich Dating: 20.04.1917
TELEGRAMM Schmidt, J. C. Author: Schmidt, J. C. Recipient: Haeckel, Ernst Corporation: Kunst- und Handelsgärtnerei Dating: 25.07.1892
TELEGRAMM Müller, Ernst Author: Müller, Ernst Recipient: Haeckel, Ernst Corporation: Gärtnerei Blumenschmidt Dating: 25.07.1892