BRIEF OHNE UMSCHLAG Schulz senior, Fried. G. Author: Schulz senior, Fried. G. Recipient: Haeckel, Ernst Dating: 09.02.1914
BRIEF OHNE UMSCHLAG Schulz senior, Fried. G. Author: Schulz senior, Fried. G. Recipient: Haeckel, Ernst Dating: 13.02.1913
BRIEF OHNE UMSCHLAG Schulz senior, Fried. G. Author: Schulz senior, Fried. G. Recipient: Haeckel, Ernst Dating: 04.08.1908