BRIEF [O.A.] Tamms, Sophie (geb. Jacobi) Author: Tamms, Sophie (geb. Jacobi) Recipient: Haeckel, Ernst Dating: 16.02.1914
BRIEF OHNE UMSCHLAG Wagner, Richard Author: Wagner, Richard Recipient: Haeckel, Ernst Dating: 13.02.1908
BRIEF OHNE UMSCHLAG Wagner, Richard Author: Wagner, Richard Recipient: Haeckel, Ernst Dating: 15.02.1909
POSTKARTE Wagner, Richard; Barke Otto [et al.] Author: Wagner, Richard; Barke Otto [et al.] Recipient: Haeckel, Ernst Dating: 16.02.1915
BRIEF [O.A.] Tamms, Sophie (geb. Jacobi) Author: Tamms, Sophie (geb. Jacobi) Recipient: Haeckel, Ernst Dating: 14.02.1919
POSTKARTE Tamms, Sophie (geb. Jacobi) Author: Tamms, Sophie (geb. Jacobi) Recipient: Haeckel, Ernst Dating: 14.03.1914
BRIEF [O.A.] Tamms, Sophie (geb. Jacobi) Author: Tamms, Sophie (geb. Jacobi) Recipient: Haeckel, Ernst Dating: 17.03.1919