KARTE Thiele, Carl Heinrich Author: Thiele, Carl Heinrich Recipient: Haeckel, Ernst Dating: 12.11.1918
BRIEF OHNE UMSCHLAG Thiele, Carl Heinrich Author: Thiele, Carl Heinrich Recipient: Haeckel, Ernst Dating: 19.10.1918
KARTE Thiele, Carl Heinrich Author: Thiele, Carl Heinrich Recipient: Haeckel, Ernst Dating: 15.02.1918