BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Reimer, Georg Dating: 18.05.1876
BRIEF OHNE UMSCHLAG Günther, Albert Author: Günther, Albert Recipient: Haeckel, Ernst Corporation: British Museum Dating: 21.10.1876
BRIEF [O.A.] Dimitriewitz, Lazar M... Author: Dimitriewitz, Lazar M... Recipient: Haeckel, Ernst Dating: 01.11.1876
BRIEF [O.A.] Dumont, Emerich Baron Author: Dumont, Emerich Baron Recipient: Haeckel, Ernst Dating: 25.06.1876
BRIEF OHNE UMSCHLAG Deubler, Konrad Author: Deubler, Konrad Recipient: Haeckel, Ernst Dating: 05.11.1876
MANUSKRIPT Douwes Dekker, Eduard Author: Douwes Dekker, Eduard Recipient: Haeckel, Ernst Dating: ??.??.1876
BRIEF OHNE UMSCHLAG Carneri, Bartholomäus von Author: Carneri, Bartholomäus von Recipient: Haeckel, Ernst Dating: 26.05.1876
BRIEF [O.A.] Calzak, Jul... V... Author: Calzak, Jul... V... Recipient: Haeckel, Ernst Corporation: Club für moderne Wissenschaft Dating: 04.02.1876
BRIEF [O.A.] Casanova, Peregrín Author: Casanova, Peregrín Recipient: Haeckel, Ernst Dating: 04.01.1876
