BRIEF OHNE UMSCHLAG Frazer, Persifor Author: Frazer, Persifor Recipient: Haeckel, Ernst Dating: 02.05.1902
BRIEF OHNE UMSCHLAG Lilienthal-Stern, Meta Author: Lilienthal-Stern, Meta Recipient: Haeckel, Ernst Dating: 17.08.1910
BRIEF OHNE UMSCHLAG Rücholdt, F. Arthur Author: Rücholdt, F. Arthur Recipient: Haeckel, Ernst Dating: 05.02.1914
BRIEF OHNE UMSCHLAG Hegeler, Edward C. Author: Hegeler, Edward C. Recipient: Haeckel, Ernst Dating: 19.02.1895
BRIEF OHNE UMSCHLAG Starck, Emilie Author: Starck, Emilie Recipient: Haeckel, Ernst Dating: 12.02.1915
BRIEF OHNE UMSCHLAG Starck, Emilie Author: Starck, Emilie Recipient: Haeckel, Ernst Dating: 18.07.1910
BRIEF OHNE UMSCHLAG Starck, Emilie Author: Starck, Emilie Recipient: Haeckel, Ernst Dating: 10.11.1914
BRIEF OHNE UMSCHLAG Starck, Emilie Author: Starck, Emilie Recipient: Haeckel, Ernst Dating: 20.12.1906
BRIEF OHNE UMSCHLAG Starck, Emilie Author: Starck, Emilie Recipient: Haeckel, Ernst Dating: 16.02.1916
BRIEF OHNE UMSCHLAG Starck, Emilie Author: Starck, Emilie Recipient: Haeckel, Ernst Dating: 15.05.1916