BRIEF OHNE UMSCHLAG Weismann, August Author: Weismann, August Recipient: Haeckel, Ernst Dating: 07.02.1904
BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 17.10.1904
BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 15.02.1904
BRIEF [O.A.] Schörke, Alexander Author: Schörke, Alexander Recipient: Haeckel, Ernst Corporation: Patent-Anwalt Dating: 10.10.1904
BRIEF [O.A.] Van de Velde-Sethe, Maria Author: Van de Velde-Sethe, Maria Recipient: Haeckel, Ernst Dating: 15.02.1904
BRIEF [O.A.] Thoden van Velzen, S... K... Author: Thoden van Velzen, S... K... Recipient: Haeckel, Ernst Dating: 07.09.1904
BRIEF [O.A.] Schorn, Antonie von Author: Schorn, Antonie von Recipient: Haeckel, Ernst Dating: 20.12.1904
