BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 11.06.1865
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob Author: Haeckel, Carl Gottlob Recipient: Haeckel, Ernst Dating: 10.06.1865
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob; Haeckel, Charlotte Author: Haeckel, Carl Gottlob; Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 21.09.1865