BRIEF OHNE UMSCHLAG Benignus, Wilhelm Author: Benignus, Wilhelm Recipient: Haeckel, Ernst Dating: 31.05.1915
BRIEF OHNE UMSCHLAG Benignus, Wilhelm Author: Benignus, Wilhelm Recipient: Haeckel, Ernst Dating: 12.07.1915
BRIEF OHNE UMSCHLAG Benignus, Wilhelm Author: Benignus, Wilhelm Recipient: Haeckel, Ernst Dating: 06.04.1915
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 15.11.1874
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 25.03.1875
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 04.08.1875
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 10.09.1875
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 21.10.1875
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 30.11.1875
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 04.02.1876