BRIEF [O.A.] Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Carl & Charlotte [Eltern] Dating: 17.08.1859
BRIEF OHNE UMSCHLAG Kölliker, Albert Author: Kölliker, Albert Recipient: Haeckel, Ernst Dating: 06.12.1859
DOKUMENT (NOTENBLATT) Krabbe, Harald Author: Krabbe, Harald Recipient: Haeckel, Ernst Dating: ??.??.1859
BRIEF OHNE UMSCHLAG Martens, Eduard von Author: Martens, Eduard von Recipient: Haeckel, Ernst Dating: 02.01.1859
BRIEF OHNE UMSCHLAG Beckmann, Otto Author: Beckmann, Otto Recipient: Haeckel, Ernst Dating: 17.01.1859
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Anna Dating: 24.12.1859
BRIEF OHNE UMSCHLAG Gussone, Giovanni Author: Gussone, Giovanni Recipient: Martens, Giorgio Dating: 10.09.1859
BRIEF OHNE UMSCHLAG Call, Roman von Author: Call, Roman von Recipient: Haeckel, Ernst Dating: 02.06.1859
