Series comprises Ronald St. John Macdonald's records regarding his professional activities, including his involvement with different organizations, such as the Council of Europe, the European Court of Human Rights, the Hague, World Academy of Arts and Science, Canadian Council of International Law, United Nations, Institute of International Law, African Society of International Law, British Institute of International Law, Canadian Institute of International Law, International Law Association, and others. Series contains meeting agendas, meeting minutes, newsletters, reports, and other records.