BRIEF OHNE UMSCHLAG Merkel, August Author: Merkel, August Recipient: Haeckel, Charlotte Dating: 28.06.1863
BRIEF OHNE UMSCHLAG Merkel, Christiane Author: Merkel, Christiane Recipient: Haeckel, Charlotte Dating: 26.02.1864
POSTKARTE Haeckel, Agnes (geb. Huschke) Author: Haeckel, Agnes (geb. Huschke) Recipient: Haeckel, Charlotte Dating: 03.09.1880
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Charlotte Dating: 30.12.1876
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Charlotte Dating: 26.06.1857
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Charlotte Dating: 21.03.1878
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Charlotte Dating: 27.03.1878
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Charlotte Dating: 30.03.1878
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Charlotte Dating: 07.04.1878