BRIEF OHNE UMSCHLAG Becker, Franz Johann Jakob Emil Author: Becker, Franz Johann Jakob Emil Recipient: Haeckel, Ernst Dating: 20.03.1908
BRIEF [O.A.] Bellesme, Jousset de Author: Bellesme, Jousset de Recipient: Haeckel, Ernst Corporation: Direction de l'Aquarium du Trocadéro Dating: 08.01.1885
BRIEF [O.A.] Bellesme, Jousset de Author: Bellesme, Jousset de Recipient: Haeckel, Ernst Corporation: Direction de l'Aquarium du Trocadéro Dating: 01.08.1891
BRIEF [O.A.] Bariche, Alexandre de Author: Bariche, Alexandre de Recipient: Haeckel, Ernst Corporation: Les Savants Contemporains, Revue Critique Dating: 04.03.1879
57368 LENNESTADT Baillière, J... B... Author: Baillière, J... B... Recipient: Haeckel, Ernst Corporation: J. B. Baillière et fils, Libraires de l'Académie de Medicine Dating: 19.02.1873