BRIEF [O.A.] Scherzer, Ritter Karl von Author: Scherzer, Ritter Karl von Recipient: Haeckel, Ernst Dating: 26.10.1875
BRIEF [O.A.] Kollmann, Julius Author: Kollmann, Julius Recipient: Haeckel, Ernst Corporation: Anthropologische Gesellschaft Dating: 28.03.1875
BRIEF [O.A.] Koch, Gottlieb von Author: Koch, Gottlieb von Recipient: Haeckel, Ernst Dating: 13.05.1875
BRIEF [O.A.] Marshall, William Author: Marshall, William Recipient: Haeckel, Ernst Dating: 07.03.1875
BRIEF [O.A.] Marshall, William Author: Marshall, William Recipient: Haeckel, Ernst Dating: 09.06.1875
