BILDPOSTKARTE Semon, Richard; Semon Maria Author: Semon, Richard; Semon Maria Recipient: Haeckel, Ernst Dating: 04.09.1903
BILDPOSTKARTE Sokolowsky, Alexander Author: Sokolowsky, Alexander Recipient: Haeckel, Ernst Dating: 13.09.1906
BILDPOSTKARTE Sokolowsky, Alexander Author: Sokolowsky, Alexander Recipient: Haeckel, Ernst Dating: 29.07.1907
BILDPOSTKARTE Baracs, Karl; Baracs, Paula; Bothe, Margarethe Author: Baracs, Karl; Baracs, Paula; Bothe, Margarethe Recipient: Haeckel, Ernst Dating: 14.02.1916
BILDPOSTKARTE Baracs, Karl; Baracs, Paula Author: Baracs, Karl; Baracs, Paula Recipient: Haeckel, Ernst Dating: 06.09.1916
BILDPOSTKARTE Basso, Fritzi von Author: Basso, Fritzi von Recipient: Haeckel, Ernst Dating: 20.12.1905
