BRIEF [O.A.] Roche, H... de La Author: Roche, H... de La Recipient: Haeckel, Ernst Dating: 03.10.1914
BRIEF [O.A.] Roche, H... de La Author: Roche, H... de La Recipient: Haeckel, Ernst Dating: 03.10.1914
BRIEF [O.A.] Roeder, Fritz Author: Roeder, Fritz Recipient: Haeckel, Ernst Corporation: Vereinigung für Staatsbürgerliche Erziehung des Dt. Volkes Dating: 20.04.1910
BRIEF [O.A.] Roeder, Irmengard von Author: Roeder, Irmengard von Recipient: Haeckel, Ernst Dating: 04.04.1915
BRIEF [O.A.] Roeder, Irmengard von Author: Roeder, Irmengard von Recipient: Haeckel, Ernst Dating: 23.03.1915
BRIEF [O.A.] Roewer, Carl-Friedrich Author: Roewer, Carl-Friedrich Recipient: Haeckel, Ernst Dating: 30.12.1906
