BRIEF [O.A.] Floerke, Wilhelm G... Author: Floerke, Wilhelm G... Recipient: Haeckel, Ernst Dating: 15.01.1905
BRIEF [O.A.] Floerke, Wilhelm G... Author: Floerke, Wilhelm G... Recipient: Haeckel, Ernst Corporation: Germania, Internationale Auskunftei, Inkasso- Agenturen- und Immobilien-Bureau Dating: 06.04.1905
BRIEF [O.A.] Floerke, Wilhelm G... Author: Floerke, Wilhelm G... Recipient: Haeckel, Ernst Corporation: Monistische Gesellschaft Cassel Dating: 03.06.1905
BRIEF OHNE UMSCHLAG Floerke, Wilhelm G... Author: Floerke, Wilhelm G... Recipient: Haeckel, Ernst Dating: 15.01.1905