BRIEF [O.A.] Girndt, Otto Author: Girndt, Otto Recipient: Haeckel, Ernst Corporation: Redaction der "Täglichen Rundschau", Zeitung für Nichtpolitiker Dating: 02.06.1882
BRIEF [O.A.] Freudenberg, Ph... Author: Freudenberg, Ph... Recipient: Haeckel, Ernst Dating: 30.01.1882
BRIEF [O.A.] Bianchi [Baronne de], Duchesse de Casalanza Author: Bianchi [Baronne de], Duchesse de Casalanza Recipient: Haeckel, Ernst Dating: 27.08.1882
BRIEF [O.A.] Bischoff, F... B... Author: Bischoff, F... B... Recipient: Haeckel, Ernst Corporation: Herzogliche Schieferbrüche, Direction Dating: 20.10.1882
BRIEF [O.A.] Balfour, Francis M. Author: Balfour, Francis M. Recipient: Haeckel, Ernst Corporation: Trinity College Dating: 09.06.1882
