BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Carneri, Bartholomaeus von Dating: 28.12.1893
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Carneri, Bartholomaeus von Dating: 20.07.1894
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Carneri, Bartholomaeus von Dating: 20.02.1895
POSTKARTE Haeckel, Ernst Author: Haeckel, Ernst Recipient: Carneri, Bartholomaeus von Dating: 31.03.1889
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Carneri, Bartholomaeus von Dating: 09.10.1902