BRIEF [O.A.] Hüffer-Gehlig, Hedwig Author: Hüffer-Gehlig, Hedwig Recipient: Haeckel, Ernst Dating: 27.03.1914
KARTE Hüffer-Gehlig, Hedwig Author: Hüffer-Gehlig, Hedwig Recipient: Haeckel, Ernst Dating: 27.03.1914