BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 06.05.1906
BRIEF [O.A.] Schimmelmann, Ernst [Graf] Author: Schimmelmann, Ernst [Graf] Recipient: Haeckel, Ernst Dating: 16.05.1906
BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 28.05.1906
BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 24.06.1906
BRIEF [O.A.] Hagenbeck, Carl Author: Hagenbeck, Carl Recipient: Haeckel, Ernst Corporation: Handels-Menagerie & Thierpark Dating: 12.03.1906
BRIEF [O.A.] Grand-Carteret, John Author: Grand-Carteret, John Recipient: Haeckel, Ernst Dating: 22.03.1906