BRIEF [O.A.] Calenda, Vincent D. Author: Calenda, Vincent D. Recipient: Haeckel, Ernst Dating: 10.08.1914
BRIEF [O.A.] Harvey, W. H. Author: Harvey, W. H. Recipient: Haeckel, Ernst Corporation: Thomas Paine National Historical Association Dating: 13.04.1914
BRIEF [O.A.] Harvey, W. H. Author: Harvey, W. H. Recipient: Haeckel, Ernst Corporation: Thomas Paine National Historical Association Dating: 24.04.1914
BRIEF [O.A.] Harvey, W. H. Author: Harvey, W. H. Recipient: Haeckel, Ernst Corporation: Thomas Paine National Historical Association Dating: 18.06.1914
BRIEF [O.A.] Robinson, Victor Author: Robinson, Victor Recipient: Haeckel, Ernst Corporation: Medical Review of Reviews Dating: 16.02.1914
BRIEF [O.A.] Kahrs, Hans Author: Kahrs, Hans Recipient: Haeckel, Ernst Corporation: Monopol Import/Export Union Inc. Dating: 05.06.1914