BRIEF OHNE UMSCHLAG Sethe, Hermine Author: Sethe, Hermine Recipient: Haeckel, Ernst Dating: 22.02.1864
BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 21.09.1866
BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 08.09.1866
BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 11.06.1865