BRIEF OHNE UMSCHLAG Meyer, Elisabeth Author: Meyer, Elisabeth Recipient: Freiesleben, Hedwig Dating: 15.12.1916
KARTE Meyer, Elisabeth Author: Meyer, Elisabeth Recipient: Haeckel, Ernst; Haeckel, Agnes [Eltern] Dating: 12.01.1909
BRIEF [O.A.] Meyer, Elisabeth Author: Meyer, Elisabeth Recipient: Haeckel, Ernst; Haeckel, Agnes [Eltern] Dating: 03.03.1912