TELEGRAMM Wettstein, Richard von Author: Wettstein, Richard von Recipient: Haeckel, Ernst Corporation: K. K. Zoologisch-Botanische Gesellschaft in Wien Dating: 07.03.1907
BRIEF [O.A.] Drugievic, Ferdinand Author: Drugievic, Ferdinand Recipient: Haeckel, Ernst Dating: 11.02.1907
BRIEF [O.A.] Daxenbichler, Fanny Author: Daxenbichler, Fanny Recipient: Haeckel, Ernst Dating: 14.02.1907
BRIEF [O.A.] Daxenbichler, Fanny Author: Daxenbichler, Fanny Recipient: Haeckel, Ernst Dating: 16.05.1907
BRIEF [O.A.] Ivezic, Gerassim P... Author: Ivezic, Gerassim P... Recipient: Haeckel, Ernst Dating: 15.02.1907
BRIEF [O.A.] Ivezic, Gerassim P... Author: Ivezic, Gerassim P... Recipient: Haeckel, Ernst Dating: 31.12.1907