Papers relating to Addison, 1921-1960, (fols. 1-134) address book, with correspondence and addresses interleaved, and (fols. 135-278) 'Index to Subject Files', file sheets outlining Addison's filing system, with (fols. 249-269) correspondence of Addison and Dorothy, Lady Addison, with the Cabinet Office, 1936-1960, concerning Cabinet papers, and (fols. 270-278) correspondence with the Bodleian Library, 1973, concerning deposit of papers.