BRIEF [O.A.] Reuschle, Carl Gustav Author: Reuschle, Carl Gustav Recipient: Haeckel, Ernst Dating: 20.02.1875
BRIEF [O.A.] Reuschle, Carl Gustav Author: Reuschle, Carl Gustav Recipient: Haeckel, Ernst Dating: 25.05.1875
BRIEF [O.A.] Reuschle, Carl Gustav Author: Reuschle, Carl Gustav Recipient: Haeckel, Ernst Dating: 02.07.1875