BRIEF [O.A.] Huxley, Henrietta Author: Huxley, Henrietta Recipient: Haeckel, Ernst Dating: 13.02.1896
BRIEF [O.A.] Huxley, Henrietta Author: Huxley, Henrietta Recipient: Haeckel, Ernst Dating: 23.08.1898
BRIEF [O.A.] Huxley, Henrietta Author: Huxley, Henrietta Recipient: Haeckel, Ernst Dating: 27.03.1899
BRIEF [O.A.] Huxley, Henrietta Author: Huxley, Henrietta Recipient: Haeckel, Ernst Dating: 11.07.1899
BRIEF [O.A.] Huxley, Henrietta Author: Huxley, Henrietta Recipient: Haeckel, Ernst Dating: 18.11.1901
BRIEF OHNE UMSCHLAG Huxley, Henrietta Author: Huxley, Henrietta Recipient: Haeckel, Ernst Dating: 09.03.1914