Series consists predominately of correspondence with heads of state and other political leaders in various countries relating to issues of international politics, including the Cuban missile crisis, the Sino-Indian border dispute, the war in Vietnam, Arab-Israeli relations, etc. Among the correspondents are Chou En-lai (Zhou Enlai) of China, Jawaharlal Nehru of India, Ayub Khan and Zulfikar Ali Bhutto of Pakistan, Nikita Krushchev of the USSR, Secretary General U Thant of the United Nations, Ho Chi Minh of Vietnam, and many others. Letters from Russell and his staff are typescript copies.
By 1963, the Bertrand Russell Peace Foundation had been established, and the affairs of the BRPF are also reflected here. Accordingly, there is some overlap with the BRPF series (311 onward). There is also overlap with series 640 World Affairs. The files are arranged alphabetically by name of country, and also include material relating to the United Nations.
Series was acquired as part of Archives 1.