BRIEF OHNE UMSCHLAG Bose, Carl August Graf Author: Bose, Carl August Graf Recipient: Haeckel, Ernst Dating: 09.09.1885
BRIEF OHNE UMSCHLAG Bose, Karl August Graf Author: Bose, Karl August Graf Recipient: Haeckel, Ernst Dating: 14.10.1885
BRIEF OHNE UMSCHLAG Bose, Carl August Graf Author: Bose, Carl August Graf Recipient: Haeckel, Ernst Dating: 27.12.1885
BRIEF [O.A.] Bolau, Heinrich Author: Bolau, Heinrich Recipient: Haeckel, Ernst Corporation: Zoologische Gesellschaft Hamburg Dating: 29.05.1885
BRIEF [O.A.] Bimler, Wilh... Author: Bimler, Wilh... Recipient: Haeckel, Ernst Corporation: Jac. Ziegler Dating: 11.12.1885
BRIEF [O.A.] Benecke, Ernst Wilhelm Author: Benecke, Ernst Wilhelm Recipient: Haeckel, Ernst Dating: 16.03.1885