BRIEF [O.A.] Scheins, Euthalie Author: Scheins, Euthalie Recipient: Haeckel, Ernst Dating: 27.02.1918
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: 29.12.1910
BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 15.02.1911
BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 02.09.1911
BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 15.02.1912
BRIEF [O.A.] Schimmelmann, Frh. Hugo von Author: Schimmelmann, Frh. Hugo von Recipient: Haeckel, Ernst Dating: 15.02.1914