BRIEF [O.A.] Ferguson, William Author: Ferguson, William Recipient: Haeckel, Ernst Dating: 09.03.1882
BRIEF [O.A.] Green, Staniforth Author: Green, Staniforth Recipient: Haeckel, Ernst Dating: 25.11.1881
BRIEF [O.A.] Freudenberg, Ph... Author: Freudenberg, Ph... Recipient: Haeckel, Ernst Dating: 30.01.1882
BRIEF [O.A.] Freudenberg, Ph... Author: Freudenberg, Ph... Recipient: Haeckel, Ernst Dating: 30.12.1891
BRIEF OHNE UMSCHLAG Freudenberg, Philipp Author: Freudenberg, Philipp Recipient: Haeckel, Ernst Dating: 18.07.1881
BRIEF [O.A.] Abayawira, M. P. Abraham Author: Abayawira, M. P. Abraham Recipient: Haeckel, Ernst Corporation: Normal School Dating: 30.07.1882
BRIEF [O.A.] Stipperger Author: Stipperger Recipient: Haeckel, Ernst Corporation: Austro-Hungarian Lloyd's Steam Navigation Company Dating: 15.02.1882
BRIEF [O.A.] Stipperger Author: Stipperger Recipient: Haeckel, Ernst Corporation: Austro-Hungarian Lloyd's Steam Navigation Company Dating: 16.02.1882