HARTCUP, Guy. British, b. 1919. Genres: Military/Defense/Arms control, Sciences. Career: Historian, Air Ministry, 1948-60; English Ed., International Atomic Energy Agency, Vienna, 1961-62; Assistant Historian, Cabinet Office Historical Section, 1963-64; Historian, H. M. Treasury, London, 1965-77. Publications: Origins and Development of Operational Research in the Royal Air Force, 1963; The Challenge of War, 1970; The Achievement of the Airship, 1974; Code Name Mulberry, 1977; Camouflage, 1979; (with T.E. Allibone) Cockcroft and the Atom, 1984; The War of Invention, 1988; The Silent Revolution: Development of Conventional Weapons, 1945-1985, 1993; The Effect of Science on the Second World War, 2000. Address: 16 Temple Sheen, East Sheen, London SW14 7RP, England.