BRIEF [O.A.] Henry, Joseph Author: Henry, Joseph Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 27.04.1876
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