BRIEF OHNE UMSCHLAG Fischer, Gustav Author: Fischer, Gustav Recipient: Haeckel, Ernst Dating: 25.11.1883
BRIEF OHNE UMSCHLAG Göldi, Emil August Author: Göldi, Emil August Recipient: Haeckel, Ernst Dating: 28.04.1883
BRIEF OHNE UMSCHLAG Paul, C. Kegan Author: Paul, C. Kegan Recipient: Haeckel, Ernst Dating: 20.04.1883
BRIEF OHNE UMSCHLAG Paetel, Hermann Author: Paetel, Hermann Recipient: Haeckel, Ernst Dating: 16.10.1883
BRIEF OHNE UMSCHLAG Paetel, Hermann Author: Paetel, Hermann Recipient: Haeckel, Ernst Dating: 26.10.1883
BRIEF OHNE UMSCHLAG Paetel, Hermann Author: Paetel, Hermann Recipient: Haeckel, Ernst Dating: 29.10.1883
BRIEF OHNE UMSCHLAG Paetel, Hermann Author: Paetel, Hermann Recipient: Haeckel, Ernst Dating: 01.11.1883