BRIEF [O.A.] Foullon, Clementine Author: Foullon, Clementine Recipient: Haeckel, Ernst Dating: 06.05.1878
BRIEF [O.A.] Foullon, Clementine Author: Foullon, Clementine Recipient: Haeckel, Ernst Dating: 22.07.1878
BRIEF [O.A.] Foullon, Clementine Author: Foullon, Clementine Recipient: Haeckel, Ernst Dating: 29.07.1878
BRIEF [O.A.] Foullon, Clementine Author: Foullon, Clementine Recipient: Haeckel, Ernst Dating: 26.03.1878
BRIEF [O.A.] Recipient: Haeckel, Ernst Corporation: Leseverein der deutschen Studenten Wiens Dating: 15.07.1878
BRIEF [O.A.] Neumann-Spallart, Franz Xaver von Author: Neumann-Spallart, Franz Xaver von Recipient: Haeckel, Ernst Dating: 18.03.1878
BRIEF [O.A.] Nordmann, Johannes Author: Nordmann, Johannes Recipient: Haeckel, Ernst Dating: 03.08.1878