BRIEF OHNE UMSCHLAG Marojevic, Bonagracija Author: Marojevic, Bonagracija Recipient: Haeckel, Ernst Dating: 07.07.1871
BRIEF OHNE UMSCHLAG Marojevic, Bonagracija Author: Marojevic, Bonagracija Recipient: Haeckel, Ernst Dating: 18.11.1871
BRIEF [O.A.] Lichtenberg, Friedrich Author: Lichtenberg, Friedrich Recipient: Haeckel, Ernst Dating: 10.06.1871
BRIEF [O.A.] Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Carl & Charlotte [Eltern] Dating: 09.04.1871
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes Dating: 09.04.1871
BRIEF [O.A.] Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Carl & Charlotte [Eltern] Dating: 21.03.1871