Co-winner of the 1962 Nobel Prize for Physiology or Medicine for the discovery of DNA. Signed book: Genes, Girls and Gamow. First American edition. NY: Alfred A. Knopf, 2001. Hardcover with dustjacket, 6.5 x 9.5, 259 pages. Signed on the title page in black ballpoint, “Jim Watson.” In fine condition. R&R COA.