Unsigned first edition book: Pebble in the Sky by Isaac Asimov. First edition, first printing. Garden City, NY: Doubleday, 1950. Hardcover with facsimile dust jacket, 5.5 x 8, 223 pages. Book condition: VG/VG+ (facsimile dust jacket). Released by Doubleday in 1950, this was Asimov's first novel.
