Signed book: The Double Helix. First edition, later printing. NY: Atheneum, 1968. Hardcover with dustjacket, 5.5 x 8.5, 226 pages. Signed in ballpoint on the title page. In fine condition, with rubbing, tears, and chips to jacket, slight fading to edges, and adhesive remnant to rear pastedown. R&R COA.