BRIEF [O.A.] Carus, Paul Author: Carus, Paul Recipient: Haeckel, Ernst Corporation: The Monist, The Open Court Dating: 02.02.1904
BRIEF [O.A.] Carus, Paul Author: Carus, Paul Recipient: Ashcroft, Edgar A. Corporation: The Monist, The Open Court Dating: 05.07.1904