BRIEF OHNE UMSCHLAG Focke, Wilhelm Olbers Author: Focke, Wilhelm Olbers Recipient: Haeckel, Ernst Dating: 25.09.1858
BRIEF OHNE UMSCHLAG Gude, Karl Author: Gude, Karl Recipient: Haeckel, Carl Gottlob Dating: 17.10.1858
BRIEF OHNE UMSCHLAG Beckmann, Otto Author: Beckmann, Otto Recipient: Haeckel, Ernst Dating: 23.03.1858
BRIEF OHNE UMSCHLAG Beckmann, Otto Author: Beckmann, Otto Recipient: Haeckel, Ernst Dating: 19.04.1858
BRIEF OHNE UMSCHLAG Beckmann, Otto Author: Beckmann, Otto Recipient: Haeckel, Ernst Dating: 27.07.1858
BRIEF OHNE UMSCHLAG Beckmann, Otto Author: Beckmann, Otto Recipient: Haeckel, Ernst Dating: 08.10.1858
BRIEF OHNE UMSCHLAG Beckmann, Otto Author: Beckmann, Otto Recipient: Haeckel, Ernst Dating: 21.12.1858
BRIEF OHNE UMSCHLAG Schubert, Adolph Author: Schubert, Adolph Recipient: Haeckel, Ernst Dating: 30.12.1858