(027429) Clark, Ronald. The Man Who Broke Purple: The
Life of Colonel William F. Friedman, Who Deciphered the Japanese Code in World
War II. Boston: Little, Brown And Company, 1977. 1st Edition. Hardcover.
8vo. 271 pages. Very Good in Very Good DJ. Small printed name sticker on front
endpaper and owner's ink name and address on half title. DJ has edgewear and
small tears. ISBN: 0316145955 (Friedman, William, Cryptographers)