TELEGRAMM Recipient: Haeckel, Ernst Corporation: Kroatisches Oberstaedter Gymnasium Dating: 16.02.1912
BRIEF [O.A.] Faber, George Louis Author: Faber, George Louis Recipient: Haeckel, Ernst Corporation: British Consulate Dating: 28.12.1889
BRIEF [O.A.] Brusina, Spiridon Author: Brusina, Spiridon Recipient: Haeckel, Ernst Dating: 08.12.1874
BRIEF [O.A.] Brusina, Spiridon Author: Brusina, Spiridon Recipient: Haeckel, Ernst Dating: 26.03.1877
BRIEF [O.A.] Brusina, Spiridon Author: Brusina, Spiridon Recipient: Haeckel, Ernst Dating: 09.05.1877
BRIEF [O.A.] Brusina, Spiridon Author: Brusina, Spiridon Recipient: Haeckel, Ernst Corporation: Zoologisches National-Museum Dating: 04.05.1880
BRIEF [O.A.] Brusina, Spiridon Author: Brusina, Spiridon Recipient: Haeckel, Ernst Dating: 24.11.1873
BRIEF [O.A.] Brusina, Spiridon Author: Brusina, Spiridon Recipient: Haeckel, Ernst Dating: 17.12.1873