BRIEF OHNE UMSCHLAG Fürbringer, Max Author: Fürbringer, Max Recipient: Haeckel, Ernst Dating: 21.04.1881
BRIEF OHNE UMSCHLAG Fürbringer, Max Author: Fürbringer, Max Recipient: Haeckel, Ernst Dating: 04.08.1881
BRIEF OHNE UMSCHLAG Fürbringer, Max Author: Fürbringer, Max Recipient: Haeckel, Ernst Dating: 09.09.1881
BRIEF OHNE UMSCHLAG Fürbringer, Max Author: Fürbringer, Max Recipient: Haeckel, Ernst Dating: 13.09.1881
BRIEF [O.A.] Gestro, Raffaello Author: Gestro, Raffaello Recipient: Haeckel, Ernst Dating: 19.01.1881
BRIEF OHNE UMSCHLAG Carneri, Bartholomäus von Author: Carneri, Bartholomäus von Recipient: Haeckel, Ernst Dating: 22.09.1881
BRIEF [O.A.] Cattaneo, Giacomo Author: Cattaneo, Giacomo Recipient: Haeckel, Ernst Dating: 10.01.1881
BRIEF [O.A.] Cope, Edward Drinker Author: Cope, Edward Drinker Recipient: Haeckel, Ernst Corporation: The American Naturalist Dating: 18.03.1881
BRIEF [O.A.] Carus, Julius Victor Author: Carus, Julius Victor Recipient: Haeckel, Ernst Dating: 05.01.1881
BRIEF [O.A.] Bucchich, Gregorio Author: Bucchich, Gregorio Recipient: Haeckel, Ernst Dating: 19.01.1881