BRIEF MIT UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Delle Grazie, Marie Eugenie Dating: 27.09.1896
ANSICHTSKARTE Kölliker, Albert von Author: Kölliker, Albert von Recipient: Haeckel, Ernst Dating: ??.??.1896
POSTKARTE Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 17.03.1896
BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 11.03.1896
BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 27.04.1896
BRIEF OHNE UMSCHLAG Schulze, Franz Eilhard Author: Schulze, Franz Eilhard Recipient: Haeckel, Ernst Dating: 31.10.1896
BRIEF OHNE UMSCHLAG Weismann, August Author: Weismann, August Recipient: Haeckel, Ernst Dating: 18.11.1896
POSTKARTE Preyer, William Thierry Author: Preyer, William Thierry Recipient: Haeckel, Ernst Dating: 01.01.1896