BRIEF [O.A.] Lampert, Friedrich Ernst Wilhelm Author: Lampert, Friedrich Ernst Wilhelm Recipient: Haeckel, Ernst Dating: 24.06.1867
BRIEF OHNE UMSCHLAG Hein, Reinhold Author: Hein, Reinhold Recipient: Haeckel, Ernst Dating: 07.07.1867
BRIEF OHNE UMSCHLAG Schubert, Adolph Author: Schubert, Adolph Recipient: Haeckel, Ernst Dating: 25.06.1867
BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 11.09.1867
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob Author: Haeckel, Carl Gottlob Recipient: Haeckel, Ernst; Haeckel, Agnes Dating: 11.09.1867
BRIEF OHNE UMSCHLAG Haeckel, Carl Gottlob Author: Haeckel, Carl Gottlob Recipient: Haeckel, Ernst; Haeckel, Agnes Dating: 01.09.1867
BRIEF [O.A.] Dohrn, Carl August Author: Dohrn, Carl August Recipient: Haeckel, Ernst Dating: 28.06.1867
BRIEF OHNE UMSCHLAG Haeckel, Charlotte Author: Haeckel, Charlotte Recipient: Haeckel, Ernst Dating: 17.06.1867