Papers relating to Juliet Rhys Williams' work on economics, taxation reforms, wages policy, and Commonwealth trade; her membership of the European League for Economic Co-operation, the United Europe Movement, the European Movement, and other European groups; correspondence, articles and pamphlets relating to European issues; correspondence, speeches, conference papers and pamphlets from the Liberal Party; material concerning Rhys Williams' involvement in the Conservative Party, mostly relating to the Monday Club and elections; papers relating to commercial television, and film making; documents relating to the building and administration of Cwmbran New Town; papers relating to Rhys Williams' time as Churchwarden of St Anne's, Soho, and as vice-president of the St Anne's Society; material relating to the publishing and winding up of the 'European Review' and the 'Economic Digest'; minutes of the Bishop of Llandaff's Committee on hardship in the Rhondda Valley; Rhys Williams' collected writings, correspondence, and pamphlet and newsletter collections; papers relating to projects and societies in which Rhys Williams was involved; and family papers relating to property owned by the Rhys Williams family, family finances, photographs, Elspeth Rhys Williams (her daughter) and Sir Rhys Rhys Williams (her husband).