BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 19.11.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 30.11.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 27.06.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 12.06.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 06.06.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 19.05.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 08.05.1917
BRIEF [O.A.] Waldthausen, Ellen Author: Waldthausen, Ellen Recipient: Haeckel, Ernst Dating: 26.04.1917