TELEGRAMM Heldburg, Helene Freifrau von Author: Heldburg, Helene Freifrau von Recipient: Haeckel, Ernst Dating: 04.12.1892
TELEGRAMM Heldburg, Helene Freifrau von Author: Heldburg, Helene Freifrau von Recipient: Haeckel, Ernst Dating: 16.02.1892
TELEGRAMM Sachsen-Meiningen, Georg II., Herzog von Author: Sachsen-Meiningen, Georg II., Herzog von Recipient: Haeckel, Ernst Dating: 31.12.1892
TELEGRAMM Marx, Leopold Christian Author: Marx, Leopold Christian Recipient: Haeckel, Ernst Dating: 04.08.1892
TELEGRAMM Mauro, Pennisi Antonio Author: Mauro, Pennisi Antonio Recipient: Haeckel, Ernst Dating: 02.09.1892