BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: de Gruyter, Walter Dating: 16.02.1904
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Engelmann, Wilhelm Dating: 16.02.1904
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Richard, Jules Corporation: Zoologisches Institut der Universität Jena Dating: 30.07.1904
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Corporation: Zoologisches Institut der Universität Jena Dating: 16.12.1904
BRIEF OHNE UMSCHLAG Duncan, Isadora Author: Duncan, Isadora Recipient: Haeckel, Ernst Dating: 15.02.1904
BRIEF OHNE UMSCHLAG Dodel-Port, Arnold Author: Dodel-Port, Arnold Recipient: Haeckel, Ernst Dating: 14.02.1904
BRIEF OHNE UMSCHLAG Dodel-Port, Arnold Author: Dodel-Port, Arnold Recipient: Haeckel, Ernst Dating: 31.10.1904
BRIEF OHNE UMSCHLAG Erdmann, Gustav Adolf Author: Erdmann, Gustav Adolf Recipient: Haeckel, Ernst Dating: 26.10.1904
BRIEF OHNE UMSCHLAG Calsow, Juan Author: Calsow, Juan Recipient: Haeckel, Ernst Corporation: Devès & Cie. Dating: 07.08.1904
