BRIEF OHNE UMSCHLAG Nansen, Fridtjof Author: Nansen, Fridtjof Recipient: Haeckel, Ernst Dating: 01.03.1913
BRIEF OHNE UMSCHLAG Nansen, Fridtjof Author: Nansen, Fridtjof Recipient: Haeckel, Ernst Dating: 11.11.1910
BRIEF OHNE UMSCHLAG Kükenthal, Willy Author: Kükenthal, Willy Recipient: Haeckel, Ernst Dating: 25.04.1889
BRIEF OHNE UMSCHLAG Kükenthal, Willy Author: Kükenthal, Willy Recipient: Haeckel, Ernst Dating: 12.09.1885
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Carl & Charlotte [Eltern] Dating: 06.08.1869
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes Dating: 06.08.1869
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes Dating: 18.08.1869