Correspondence, diaries, sermons, addresses, lectures, writings, articles, book reviews, clippings, scrapbooks, photographs, and other papers concerning Oxnam's life and career in religious and public service. Documents his work with the Church of All Nations, the controversy over diplomatic relations between the U.S. and the Vatican, the issues of church and state and Protestantism as it related to Catholicism, charges made by the House Committee on Un-American Activities against Oxnam, and his life as reported by the press.

Correspondents include George Smith Brown, Samuel McCrea Cavert, Matthew J. Connelly, Henry Hitt Crane, John Foster Dulles, Sherwood Eddy, Dwight D. Eisenhower, Franklin Clark Fry, Frederick Brown Harris, Cordell Hull, Donald Lester Jackson, David Eli Lilienthal, Carl McIntire, Marvin Hunter McIntyre, Louie D. Newton, Charles C. Parlin, Daniel A. Poling, Eleanor Roosevelt, Franklin D. Roosevelt, Henry Knox Sherrill, William L. Stidger, Henry L. Stimson, Myron Charles Taylor, Harry S. Truman, Harold Himmel Velde, Henry A. Wallace, Herbert Welch, and Athenagoras I, Ecumenical Patriarch of Constantinople.