BRIEF OHNE UMSCHLAG Schoeller, Caesar Author: Schoeller, Caesar Recipient: Haeckel, Ernst Dating: 05.05.1909
BRIEF OHNE UMSCHLAG Keller, Conrad Author: Keller, Conrad Recipient: Haeckel, Ernst Dating: 14.02.1909
BRIEF OHNE UMSCHLAG Fiedler, Julius Author: Fiedler, Julius Recipient: Haeckel, Ernst Dating: 14.02.1909
BRIEF OHNE UMSCHLAG Hirschhorn-Ulrich, Berta Author: Hirschhorn-Ulrich, Berta Recipient: Haeckel, Ernst Dating: 13.02.1909
BRIEF OHNE UMSCHLAG Kollmann, Julius Author: Kollmann, Julius Recipient: Haeckel, Ernst Dating: 16.02.1909
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes Dating: 10.09.1909
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes (Röschen) Dating: 17.09.1909
BRIEF OHNE UMSCHLAG Guntli, Emil; Itschner, Max [et al.] Author: Guntli, Emil; Itschner, Max [et al.] Recipient: Haeckel, Ernst Dating: 11.02.1909
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rottenburg, Paul von Dating: 22.09.1909