CONAN DOYLE, Arthur (1859-1930). The Valley of Fear, London: Smith, Elder & Co., 1915. 8°, half title, half tone frontispiece by Frank Wiles, 6-pages publisher's advertisements at end (a few spots to title, contents leaf and first part-title). Original red cloth gilt (short tear to head of spine, light dust soiling to upper cover, small light ink stain on lower cover). Provenance: The Book Society (ex-libris sticker). FIRST EDITION IN BOOK FORM. De Waal 503; Green & Gibson A39a.