BRIEF OHNE UMSCHLAG Büchner, Ludwig Author: Büchner, Ludwig Recipient: Haeckel, Ernst Dating: 01.08.1867
BRIEF OHNE UMSCHLAG Anheisser, Roland Author: Anheisser, Roland Recipient: Haeckel, Ernst Dating: 16.07.1902
BRIEF OHNE UMSCHLAG Anheisser, Roland Author: Anheisser, Roland Recipient: Haeckel, Ernst Dating: 29.07.1902
BRIEF OHNE UMSCHLAG Anheisser, Roland Author: Anheisser, Roland Recipient: Haeckel, Ernst Dating: 10.06.1904
BRIEF OHNE UMSCHLAG Anheisser, Roland Author: Anheisser, Roland Recipient: Haeckel, Ernst Dating: 13.06.1904
BRIEF OHNE UMSCHLAG Anheisser, Roland Author: Anheisser, Roland Recipient: Haeckel, Ernst Dating: 17.10.1904
BRIEF OHNE UMSCHLAG Anheisser, Roland Author: Anheisser, Roland Recipient: Haeckel, Ernst Dating: 11.03.1907
BRIEF OHNE UMSCHLAG Schleiden, Matthias Jacob Author: Schleiden, Matthias Jacob Recipient: Haeckel, Ernst Dating: 23.04.1873
BRIEF OHNE UMSCHLAG Schleiden, Matthias Jacob; Haeckel, Agnes Author: Schleiden, Matthias Jacob; Haeckel, Agnes Recipient: Haeckel, Ernst Dating: 06.03.1873