Papers, 1914-1983, of Sir John Mansfield Addis, comprising correspondence relating to Addis's education at Rugby and Oxford (1925-1936); correspondence, including that with his sister Robina Addis, diaries and research material relating to his diplomatic career (1933-1974); and material relating to his retirement years (1975-1982) including reports of South East Asian Tours, lecture notes, research and scholarly work. Also includes personal items (1914-1983) and photographs (1933-1974).

Papers, 1926-1986, of Ifor Ball Powell, largely comprising the Philippine reference material collected by him, together with his correspondence and personal papers. The reference material covers topics such as the Philippine legislature; Philippine administration; political parties, elections and election statistics; US Philippine agreements and relations; Philippine Islands during World War II; and the City of Manila. Also included are photographs taken during Powell's field trips in Southeast and East Asia, particularly in the Philippines, and an extensive collection of press cuttings.

Papers, 1888-1981, chiefly comprising the correspondence and personal papers of Sir Alwyne Ogden, also including his diaries (c1920-1970), photographs, notes and drafts for his autobiography. The collection also adds detail to the life of his wife Jessie Ogden and her father, Albert Henry Bridge.

Papers, c1830-1925, of Major-General Sir Henry Marion Durand and Sir Henry Mortimer Durand, giving a good picture of their work, particularly Henry Mortimer Durand. These include a set of Henry Mortimer Durand's diaries (1870-1907); a large selection of correspondence (1872-1922) (correspondents include Lord Lansdowne, Grey, Curzon and Roberts); and a collection of press cuttings (1902-1908) relating to the period when he was Ambassador in America. Henry Mortimer Durand also wrote a number of literary works, some of which are present in this collection. Also of interest are a number of family photograph albums, depicting scenes of India, Europe and America.

Notebooks of Sir Gerald Barry, record conversations with Carl Goerdeler (a member of the German opposition to Hitler) and notes on British politics before and after World War Two; correspondence concerning editorial responsibilities at the 'News Chronicle'; texts of wartime broadcasts; diaries of Sir Gerald Barry's visits to France, Greece, Germany, Poland, Czechoslovakia, Switzerland and the United States of America; a small section on the Festival of Britain consisting of a file of correspondence on the setting up of an International Design Centre and a file of correspondence on the redevelopment of Crystal Palace; one file of correspondence on censorship reform; and articles and speeches by Sir Gerald Barry and notes and drafts for his autobiography.