BRIEF OHNE UMSCHLAG Sethe, Anna Author: Sethe, Anna Recipient: Haeckel, Charlotte; Haeckel, Carl Gottlob Dating: 13.02.1859
BRIEF OHNE UMSCHLAG Sethe, Hermine Author: Sethe, Hermine Recipient: Haeckel, Charlotte; Haeckel, Carl Gottlob Dating: 22.02.1864
BRIEF OHNE UMSCHLAG Haeckel, Anna; Haeckel, Karl Author: Haeckel, Anna; Haeckel, Karl Recipient: Haeckel, Charlotte; Haeckel, Carl Gottlob Dating: 25.09.1863