DOYLE, Sir ARTHUR CONAN. The Valley of Fear. London: Smith, Elder & Co., 1915. Frontispiece by Frank Wiles. 8vo, original gilt-lettered red cloth, some finish damage to cloth; a few wormtracks at inner hinges, some foxmarks on a few preliminaries. Second impression, PRESENTATION COPY, inscribed by Doyle on the title-page: "Yours sincerely Arthur Conan Doyle May 2/20."