1937, 38, 39 file consists of:

Correspondence and related items, including letters from his wife Florence Jewel Baillie, his brother Donald Macpherson Baillie and George Kennedy Allen Bell. Also material relating to engagements in the United States, New Zealand and Australia, YMCA and World Council of Church matters and John Baillie's honorary degree from Muhlenberg College.

Correspondence and related items, including letters from his wife Florence Jewel Baillie, his brother Donald Macpherson Baillie, Mona Anderson, Ian W Fraser, Sir Zwinglius Frank Willis and Henry Pitney Van Dusen. Includes material relating to the World Council of Churches and letters congratulating John Baillie on being appointed Principal of New College. Also includes a paper, 'The Idea of Orthodoxy'.

Correspondence and related items, including letters from John Keith Benton, Hachiro Yuasa, Reinhold Niebuhr. Includes material relating to John Baillie's retiral, a visit to Hungary, student lists and documents relating to the establishment of closer links between the Church of Scotland, Church of England, Episcopal Church of Scotland and Presbyterian Church of England.

Correspondence and related items, including letters from his wife Florence Jewel Baillie, Matthew Black and Ian W Fraser. Includes material relating to the World Council of Churches, a visit to Argentina and documents relating to the establishment of closer links between the Church of Scotland, Church of England, Episcopal Church of Scotland and Presbyterian Church of England.