BRIEF OHNE UMSCHLAG Martens, Eduard von Author: Martens, Eduard von Recipient: Haeckel, Ernst Dating: 13.06.1859
BRIEF OHNE UMSCHLAG Martens, Eduard von Author: Martens, Eduard von Recipient: Haeckel, Ernst Dating: 25.01.1859
BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 04.02.1859
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob; Haeckel, Charlotte Author: Haeckel, Carl Gottlob; Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 02.02.1859
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob Author: Haeckel, Carl Gottlob Recipient: Haeckel, Ernst Dating: 30.11.1859
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob; Haeckel, Charlotte Author: Haeckel, Carl Gottlob; Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 09.11.1859