Signed book: The Survival of the Wisest. Later printing. NY: Harper & Row, Publishers, 1973. Hardcover with dustjacket, 5.75 x 8.5, 124 pages. Signed and inscribed on the first free-end page in black ink, “To Armand Hammer, A great benefactor of science and the Arts, for Humanity. In friendship, Jonas Salk, 19 January 1978.” Some light staining to the front board, a few pencil notations to the first two pages, and a price clip to the dustjacket, otherwise fine condition. RRAuction COA.