TELEGRAMM Schauenburg, Moritz Author: Schauenburg, Moritz Recipient: Haeckel, Ernst Dating: 16.02.1907
TELEGRAMM Schauenburg, Moritz Author: Schauenburg, Moritz Recipient: Haeckel, Ernst Dating: 16.02.1914
TELEGRAMM Schauenburg, Moritz Author: Schauenburg, Moritz Recipient: Haeckel, Ernst Dating: 16.02.1909