BRIEF [O.A.] Gheorghiu, Ernest C... Author: Gheorghiu, Ernest C... Recipient: Haeckel, Ernst Corporation: Asezamintele Brancovenesti Dating: 16.02.1907
BRIEF [O.A.] Gheorghiu, Ernest C... Author: Gheorghiu, Ernest C... Recipient: Haeckel, Ernst Corporation: Asezamintele Brancovenesti Dating: 01.04.1907
BRIEF [O.A.] Gheorghiu, Ernest C... Author: Gheorghiu, Ernest C... Recipient: Haeckel, Ernst Corporation: Asezamintele Brancovenesti Dating: 17.05.1911
BRIEF [O.A.] Remer, Anselm Jg... Author: Remer, Anselm Jg... Recipient: Haeckel, Ernst Dating: 25.05.1908
BRIEF [O.A.] Remer, Anselm Jg... Author: Remer, Anselm Jg... Recipient: Haeckel, Ernst Dating: 09.08.1907