BRIEF OHNE UMSCHLAG Aegidi, Ludwig Karl Author: Aegidi, Ludwig Karl Recipient: Haeckel, Ernst Dating: 18.07.1867
BRIEF OHNE UMSCHLAG Schleicher, August Author: Schleicher, August Recipient: Haeckel, Ernst Dating: 17.02.1867
BRIEF OHNE UMSCHLAG Darwin, Charles Author: Darwin, Charles Recipient: Haeckel, Ernst Dating: 04.07.1867
BRIEF OHNE UMSCHLAG Gegenbaur, Carl Author: Gegenbaur, Carl Recipient: Haeckel, Carl Gottlob Dating: 06.01.1867
BRIEF OHNE UMSCHLAG Darwin, Charles Author: Darwin, Charles Recipient: Haeckel, Ernst Dating: 08.01.1867
BRIEF OHNE UMSCHLAG Darwin, Charles Author: Darwin, Charles Recipient: Haeckel, Ernst Dating: 12.04.1867
BRIEF OHNE UMSCHLAG Darwin, Charles Author: Darwin, Charles Recipient: Haeckel, Ernst Dating: 21.05.1867
