BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 08.11.1916
BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 29.12.1916
BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 06.03.1917
BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 14.08.1917
BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 22.08.1918
BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 30.08.1919
BRIEF OHNE UMSCHLAG Daelen, Eduard Author: Daelen, Eduard Recipient: Haeckel, Ernst Dating: 03.03.1916
BRIEF OHNE UMSCHLAG Monjé, Paula (1849-1919) Author: Monjé, Paula (1849-1919) Recipient: Haeckel, Ernst Dating: 28.12.1914