BRIEF [O.A.] Bethencourt Ferreira, J... Author: Bethencourt Ferreira, J... Recipient: Haeckel, Ernst Corporation: Universidade de Lisboa, Faculdade de Sciencias, Museu Bocage Dating: 16.10.1913
BRIEF [O.A.] Bethencourt Ferreira, J... Author: Bethencourt Ferreira, J... Recipient: Haeckel, Ernst Corporation: Universidade de Lisboa, Faculdade de Sciencias, Museu Bocage Dating: 04.11.1913
BRIEF [O.A.] Blossfeldt, Wilhelm Author: Blossfeldt, Wilhelm Recipient: Haeckel, Ernst Corporation: Das Monistische Jahrhundert Dating: 01.03.1913
BRIEF [O.A.] Blossfeldt, Wilhelm Author: Blossfeldt, Wilhelm Recipient: Haeckel, Ernst Corporation: Das Monistische Jahrhundert Dating: 31.12.1913
BRIEF [O.A.] Bischoff, Alfred Author: Bischoff, Alfred Recipient: Haeckel, Ernst Corporation: Alfred Bischoff, Künstlerische Photographie Dating: 01.10.1913
