This series includes a letter to the Editor of Maclean's Magazine, September 1, 1961, in criticism of an article on UNESCO that had appeared in that magazine. Also includes a 21-page report to the Carnegie Corporation of New York concerning a study tour of universities in Great Britain and the United States, 1953-1954.

This series contains the press releases issued when Diefenbaker was Prime Minister and Leader of the Opposition (1963-1967).

This series consists of addresses delivered by Leddy, and includes, for example, "The Liberal Arts and the Modern University," The Obligations of the Educated," and "The New Frontiers of the Twentieth Century."

This series contains the manuscripts of John Diefenbaker’s speeches as well as background material, drafts, suggestions from staff, and annotated delivery copies.

This series contains posters, used mostly in John Diefenbaker’s political campaigns.

This series consists of correspondence related to Leddy's visit to Basutoland to advise the British High Commissioner regarding higher education, as well as minutes of meetings, memoranda, copies of letters, and other related documents.

This series consists of correspondence and minutes of the English-speaking Section.

This series contains motion picture film, video tape, phonograph records, and audio tape, and constitutes the sound and moving image records kept by Diefenbaker.

This series contains photographs and slides belonging to John Diefenbaker and his family. It includes many professional portraits of Diefenbaker and his second wife Olive. There are some historic photographs collected as a result of Diefenbaker’s interest in Canadian history and Sir John A. Macdonald.

This series consists of correspondence, meetings of minutes, memoranda, and other mimeographed material regarding the Conference.

This series contains press clippings on a wide variety of Canadian and international social and political topics which John Diefenbaker collected.

This series consists of correspondence regarding the situation with regard to International Studies at Canadian Universities, as well as minutes of meetings, agendas and reports.

This series consists of correspondence, minutes of annual and executive meetings, reports, brochures, etc.