Ink and ballpoint signatures, "James Dewey Watson, December 5, 1962," "Francis Crick, 10th December 1962," and "M. H. F. Wilkins," each penned on individual off-white 3.5 x 2.25 cards, which are affixed to larger backing sheets bearing portraits. In overall fine condition. A desirable combination of the three scientists who shared the 1962 Nobel Prize in Physiology or Medicine for their discoveries concerning the structure of DNA.