BRIEF [O.A.] Schollmayer, Willy Author: Schollmayer, Willy Recipient: Haeckel, Ernst Dating: 15.02.1893
BRIEF [O.A.] Schollmayer, Willy Author: Schollmayer, Willy Recipient: Haeckel, Ernst Dating: 16.05.1892
BRIEF [O.A.] Schollmayer, Willy Author: Schollmayer, Willy Recipient: Haeckel, Ernst Dating: 15.02.1897
BRIEF [O.A.] Fleischhauer, Fritz Author: Fleischhauer, Fritz Recipient: Haeckel, Ernst Dating: 04.09.1917
BRIEF [O.A.] Recipient: Haeckel, Ernst Corporation: Magdeburger Feruerversicherungs-Gesellschaft, General-Agentur Dating: 14.02.1916
BRIEF [O.A.] Raschke Author: Raschke Recipient: Haeckel, Ernst Corporation: Raschke & Giesemann Dating: 14.10.1895