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
BRIEF OHNE UMSCHLAG Haeckel, Karl; Haeckel, Charlotte Author: Haeckel, Karl; Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 09.03.1864