BRIEF OHNE UMSCHLAG Thiele, Carl Heinrich Author: Thiele, Carl Heinrich Recipient: Haeckel, Ernst Dating: 15.02.1916
KARTE Thiele, Carl Heinrich Author: Thiele, Carl Heinrich Recipient: Haeckel, Ernst Dating: 20.11.1916
BRIEF OHNE UMSCHLAG Thiele, Carl Heinrich Author: Thiele, Carl Heinrich Recipient: Haeckel, Ernst Dating: 15.11.1916