BRIEF OHNE UMSCHLAG Aiyar, R. Sundaram Author: Aiyar, R. Sundaram Recipient: Haeckel, Ernst Dating: 27.11.1912
BRIEF [O.A.] Oomayourubagham, M... Author: Oomayourubagham, M... Recipient: Haeckel, Ernst Dating: 29.05.1912