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 Crompton, Ella von Author: Crompton, Ella von Recipient: Haeckel, Ernst Dating: 22.04.1916