BRIEF [O.A.] Allmers, Hermann Author: Allmers, Hermann Recipient: Haeckel, Carl Gottlob Dating: 11.05.1860
BRIEF OHNE UMSCHLAG Aegidi, Ludwig Karl Author: Aegidi, Ludwig Karl Recipient: Haeckel, Carl Gottlob Dating: 10.11.1860
BRIEF OHNE UMSCHLAG Aegidi, Ludwig Karl Author: Aegidi, Ludwig Karl Recipient: Haeckel, Carl Gottlob Dating: 13.11.1860
BRIEF OHNE UMSCHLAG Parthey, Veronika Author: Parthey, Veronika Recipient: Haeckel, Carl Gottlob Dating: 30.12.1860
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Carl Gottlob Dating: 10.03.1860