BRIEF [O.A.] Bogdanow, Anatole Author: Bogdanow, Anatole Recipient: Haeckel, Ernst Dating: 10.09.????
BRIEF [O.A.] Bogdanow, Anatole Author: Bogdanow, Anatole Recipient: Haeckel, Ernst Dating: 27.09.????
BRIEF [O.A.] Bogdanow, Wl... Author: Bogdanow, Wl... Recipient: Haeckel, Ernst Corporation: Société Impériale des Amis d'Histoire Naturelle, d'Anthropologie et d'Ethnographie Dating: 22.12.1913
BRIEF [O.A.] Bogdanow, Wl... Author: Bogdanow, Wl... Recipient: Haeckel, Ernst Corporation: Société Impériale des Amis d'Histoire Naturelle, d'Anthropologie et d'Ethnographie Dating: 08.06.1914
BRIEF [O.A.] Anutschin Author: Anutschin Recipient: Haeckel, Ernst Corporation: Musée d'Anthropologie de l'Université impériale de Moscou Dating: 04.06.1908
BRIEF [O.A.] Davidoff, Alexander Author: Davidoff, Alexander Recipient: Haeckel, Ernst Dating: 01.11.1897
BRIEF [O.A.] Davidoff, Alexander Author: Davidoff, Alexander Recipient: Haeckel, Ernst Dating: 08.12.1897