BRIEF OHNE UMSCHLAG Recipient: Gruyter, Walter de Corporation: Dodd, Mead and Company Publishers Dating: 27.12.1915
BRIEF OHNE UMSCHLAG Bessels, Emil Author: Bessels, Emil Recipient: Haeckel, Ernst Corporation: Smithsonian Institution Dating: 05.03.1870
BRIEF OHNE UMSCHLAG Lowie, Robert H... Author: Lowie, Robert H... Recipient: Haeckel, Ernst Dating: 22.01.1902
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 30.03.1914
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 25.06.1913
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 22.08.1913
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 21.01.1914
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 31.01.1914
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 11.05.1914
BRIEF OHNE UMSCHLAG Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 04.06.1914