BRIEF [O.A.] Kellogg, Vernon Lyman Author: Kellogg, Vernon Lyman Recipient: Haeckel, Ernst Dating: 15.11.1908
BRIEF [O.A.] Kellogg, Vernon Lyman Author: Kellogg, Vernon Lyman Recipient: Haeckel, Ernst Dating: 22.11.1908
BRIEF OHNE UMSCHLAG Becker, Franz Johann Jakob Emil Author: Becker, Franz Johann Jakob Emil Recipient: Haeckel, Ernst Dating: 20.03.1908
BRIEF OHNE UMSCHLAG Becker, Franz Johann Jakob Emil Author: Becker, Franz Johann Jakob Emil Recipient: Haeckel, Ernst Dating: 16.12.1908
BRIEF OHNE UMSCHLAG Becker, Franz Johann Jakob Emil Author: Becker, Franz Johann Jakob Emil Recipient: Haeckel, Ernst Dating: 24.12.1908
BRIEF [O.A.] Bellesme, Jousset de Author: Bellesme, Jousset de Recipient: Haeckel, Ernst Dating: ??.01.1908
BRIEF OHNE UMSCHLAG Sachsen-Meiningen, Georg II., Herzog von Author: Sachsen-Meiningen, Georg II., Herzog von Recipient: Haeckel, Ernst Dating: 11.03.1908
BRIEF OHNE UMSCHLAG Berghe, F. E. van den Author: Berghe, F. E. van den Recipient: Haeckel, Ernst Corporation: Freidenkerverein Mülhausen i. E. Dating: 03.08.1908
BRIEF [O.A.] Delage, Yves Author: Delage, Yves Recipient: Haeckel, Ernst Corporation: Station Zoologique de Roscoff (Finistère) Laboratoire Lacaze-Duthiers Dating: 06.10.1908