GREY, ZANE (1875-1939). Photograph signed ("Zane Grey"), n.p., n.d. [circa 1920]. 146 x 89 mm. (5¾ x 3½ in.) including margins. A shoulder-length portrait of the author, signed on the lower margin -- MAUGHAM, W. SOMERSET (1874-1965). Photograph signed ("W. Somerset Maugham"), by Ken Ross-Mackenzie, London (imprint on verso), n.d. [circa 1940]. 164 x 119 mm. (6½ x 4¾ in.) including margins. A shoulder-length profile portrait of the author signed on the margin. (2)