POSTKARTE Rottenburg, Paul von Author: Rottenburg, Paul von Recipient: Haeckel, Ernst Dating: 12.06.1893
BRIEF OHNE UMSCHLAG Jacobs, Rudolf Author: Jacobs, Rudolf Recipient: Haeckel, Ernst Corporation: Rechtsanwalt am Oberlandesgericht Dating: 23.08.1893
BRIEF OHNE UMSCHLAG Jacobs, Rudolf Author: Jacobs, Rudolf Recipient: Haeckel, Ernst Corporation: Rechtsanwalt am Oberlandesgericht Dating: 15.11.1893
BRIEF OHNE UMSCHLAG Jacobs, Rudolf Author: Jacobs, Rudolf Recipient: Haeckel, Ernst Corporation: Rechtsanwalt am Oberlandesgericht Dating: 29.11.1893
BRIEF OHNE UMSCHLAG Ludwig, Hubert Author: Ludwig, Hubert Recipient: Haeckel, Ernst Dating: 04.11.1893
BRIEF OHNE UMSCHLAG Müller, Karl Konrad Author: Müller, Karl Konrad Recipient: Haeckel, Ernst Dating: 16.06.1893