BILDPOSTKARTE Grimsehl, Carl; Krall, Karl Author: Grimsehl, Carl; Krall, Karl Recipient: Haeckel, Ernst Dating: 19.08.1918
BILDPOSTKARTE Crompton, Ella von Author: Crompton, Ella von Recipient: Haeckel, Ernst Dating: 16.02.1918
BILDPOSTKARTE Crompton, Ella von Author: Crompton, Ella von Recipient: Haeckel, Ernst Dating: 30.08.1918
BILDPOSTKARTE Crompton, Ella von Author: Crompton, Ella von Recipient: Haeckel, Ernst Dating: 30.08.1918