Proofs and offprints of articles by WSC about World War I for Collier's Magazine and the Daily Telegraph including: "Panic in the East" on attacks on Germany by Russian forces; "[Field Marshal von] Ludendorff at Tannenberg" on the Battle of Tannenberg [Stebark, Poland]; "The man who saved Paris [France]" about General [Joseph] Gallieni; "The mystery of the Marne" on the Battle of the Marne [France]; "The mission of Colonel Hentsch" and "Ludendorff's last card".