Circular letters of Conseil Protestant au Congo, 1929-1960; minutes, reports, and other documents, including materials and correspondence on the Jubilee history of the Conseil Protestant du Congo, 1928; Protestant mission and religious liberty in the Congo; Catholic-Protestant relations and relations between missions and government; Commission pour la protection des indigenes; reports of Foreign Missions Conference of North America, Africa Committee, 1929-1964; report letters from American Presbyterian Congo missionaries, 1931-1960; other correspondence including some with Chester Bowles and Alan Paton, 1920-1965; articles by Emory Ross, 1919-1956; and pamphlets and documents on various church and other organizations.