BRIEF [O.A.] Moleschott, Jacob Author: Moleschott, Jacob Recipient: Haeckel, Ernst Dating: 12.08.1885
BRIEF [O.A.] Moleschott, Jacob Author: Moleschott, Jacob Recipient: Haeckel, Ernst Dating: 25.01.1885
BRIEF [O.A.] Krauseneck, Heinrich Author: Krauseneck, Heinrich Recipient: Haeckel, Ernst Dating: 05.02.1885
BRIEF [O.A.] Krauseneck, Heinrich Author: Krauseneck, Heinrich Recipient: Haeckel, Ernst Dating: 04.12.1885
BRIEF [O.A.] Amin, Giovanni Author: Amin, Giovanni Recipient: Haeckel, Ernst Corporation: Comitato Universario Centrale per un Monumento A Giordano Bruno Dating: 11.04.1885
BRIEF [O.A.] Walther, Johannes Author: Walther, Johannes Recipient: Haeckel, Ernst Dating: 22.05.1885
BRIEF [O.A.] Walther, Johannes Author: Walther, Johannes Recipient: Haeckel, Ernst Dating: 09.06.1885