BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes Dating: 11.08.1897
BRIEF OHNE UMSCHLAG Dohrn, Anton; Dohrn, Heinrich Author: Dohrn, Anton; Dohrn, Heinrich Recipient: Haeckel, Ernst Dating: 23.12.1863
BRIEF OHNE UMSCHLAG Haeckel, Heinrich Author: Haeckel, Heinrich Recipient: Schmidt, Heinrich Dating: 28.10.1920
BRIEF OHNE UMSCHLAG Lewinsky, Bernhard Author: Lewinsky, Bernhard Recipient: Haeckel, Ernst Dating: 13.02.1909
BRIEF OHNE UMSCHLAG Sethe, Hermine Author: Sethe, Hermine Recipient: Haeckel, Ernst Dating: 15.02.1852
BRIEF OHNE UMSCHLAG Haeckel, Heinrich Author: Haeckel, Heinrich Recipient: Haeckel, Ernst Dating: 28.08.1905
BRIEF OHNE UMSCHLAG Haeckel, Heinrich Author: Haeckel, Heinrich Recipient: Haeckel, Ernst Dating: 09.07.1905