Business papers of Dorothy, Lady Addison, 1952-1980, mainly relating to finances, investments and income tax, including correspondence with Lord Milner, her solicitor, with (fols. 2-13) correspondence with the Cabinet Office Historical Section, 1965-6; (fols. 47, 62, 150) letters from her son Christopher Addison, 1958-1980; (fols. 220-1) draft will, 1974, and (fol. 96) letter from Terry Pratchett, 1970.