BRIEF [O.A.] Charlu, P... G... S... Author: Charlu, P... G... S... Recipient: Haeckel, Ernst Dating: 07.06.1905
BRIEF [O.A.] Chetty, D... Gopaul Author: Chetty, D... Gopaul Recipient: Haeckel, Ernst Corporation: The "New Reformer" Branch Office Dating: 29.10.1907
BRIEF [O.A.] Anton, Günther Kurt Author: Anton, Günther Kurt Recipient: Haeckel, Ernst Corporation: Hotel "Mataram" Dating: 15.01.1900
BRIEF [O.A.] Anton, Günther Kurt Author: Anton, Günther Kurt Recipient: Haeckel, Ernst Dating: 03.12.1900
BRIEF [O.A.] Anton, Günther Kurt Author: Anton, Günther Kurt Recipient: Haeckel, Ernst Corporation: Tjia King Lok Dating: 15.01.1901
BRIEF [O.A.] Awdry, A... Author: Awdry, A... Recipient: Haeckel, Ernst Corporation: Government House Dating: 01.01.1882
ANSICHTSKARTE Basso, Fritzi von Author: Basso, Fritzi von Recipient: Haeckel, Ernst Dating: 21.02.1911