BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 16.02.1917
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 15.02.1917
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 28.02.1917
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 09.02.1918
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 07.03.1918
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 13.03.1918
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 07.06.1918
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 09.02.1919
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 02.03.1919
BRIEF [O.A.] Fiorentini, Marianne Author: Fiorentini, Marianne Recipient: Haeckel, Ernst Dating: 18.06.1919