BRIEF [O.A.] Rottenburg, Paul von Author: Rottenburg, Paul von Recipient: Haeckel, Ernst Dating: 28.07.1881
BRIEF [O.A.] Davidoff, Michael von Author: Davidoff, Michael von Recipient: Haeckel, Ernst Dating: 10.07.1881
BRIEF [O.A.] Cunningham, D. J. Author: Cunningham, D. J. Recipient: Haeckel, Ernst Dating: 27.08.1881
BRIEF [O.A.] Green, Staniforth Author: Green, Staniforth Recipient: Haeckel, Ernst Dating: 25.11.1881
BRIEF [O.A.] Gestro, Raffaello Author: Gestro, Raffaello Recipient: Haeckel, Ernst Dating: 19.01.1881
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
