POSTKARTE Rautenfeld, Paul von Author: Rautenfeld, Paul von Recipient: Haeckel, Ernst Dating: 07.09.1915
POSTKARTE Rautenfeld, Paul von Author: Rautenfeld, Paul von Recipient: Haeckel, Ernst Dating: 29.08.1915
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Georg II., Herzog von Sachsen-Meiningen Dating: 28.02.1901
BRIEF OHNE UMSCHLAG Schild, Johann Author: Schild, Johann Recipient: Haeckel, Ernst Dating: 13.08.1901
BRIEF OHNE UMSCHLAG Schild, Johann Author: Schild, Johann Recipient: Haeckel, Ernst Dating: 10.12.1901
BRIEF OHNE UMSCHLAG Schild, Johann Author: Schild, Johann Recipient: Haeckel, Ernst Dating: 04.09.1901
BRIEF OHNE UMSCHLAG Schild, Johann Author: Schild, Johann Recipient: Haeckel, Ernst Dating: 31.10.1901
BRIEF OHNE UMSCHLAG Schild, Johann Author: Schild, Johann Recipient: Haeckel, Ernst Dating: 11.11.1901
BRIEF OHNE UMSCHLAG Schild, Johann Author: Schild, Johann Recipient: Haeckel, Ernst Dating: 29.11.1901