BRIEF OHNE UMSCHLAG Erdmann, Gustav Adolf Author: Erdmann, Gustav Adolf Recipient: Haeckel, Ernst Dating: 14.05.1881
BRIEF OHNE UMSCHLAG Godeffroy, Cesar Author: Godeffroy, Cesar Recipient: Haeckel, Ernst Dating: 28.02.1881
BRIEF [O.A.] Gerstenberg Author: Gerstenberg Recipient: Haeckel, Ernst Corporation: Verein für Naturkunde, Gartenbau und Obstkultur Dating: 07.11.1881
BRIEF [O.A.] Goerwitz, Hermann Author: Goerwitz, Hermann Recipient: Haeckel, Ernst Dating: 10.03.1881
BRIEF [O.A.] Goerwitz, Hermann Author: Goerwitz, Hermann Recipient: Haeckel, Ernst Dating: 01.06.1881
BRIEF [O.A.] Goerwitz, Hermann Author: Goerwitz, Hermann Recipient: Haeckel, Ernst Dating: 09.06.1881
BRIEF OHNE UMSCHLAG Hertwig, Oscar Author: Hertwig, Oscar Recipient: Haeckel, Ernst Dating: 27.08.1881
BRIEF OHNE UMSCHLAG Hertwig, Oscar Author: Hertwig, Oscar Recipient: Haeckel, Ernst Dating: 11.11.1881
