BRIEF OHNE UMSCHLAG Lang, Lilia Rosa Author: Lang, Lilia Rosa Recipient: Haeckel, Ernst Dating: 26.12.1903
BRIEF OHNE UMSCHLAG Lang, Lilia Rosa Author: Lang, Lilia Rosa Recipient: Haeckel, Ernst Dating: 02.02.1906
BRIEF OHNE UMSCHLAG Lang, Lilia Rosa Author: Lang, Lilia Rosa Recipient: Haeckel, Ernst Dating: 10.01.1909
BRIEF OHNE UMSCHLAG Lang, Lilia Rosa Author: Lang, Lilia Rosa Recipient: Haeckel, Ernst Dating: 11.08.1911