Correspondence, itineraries, press cuttings and related items, including letters from his wife Florence Jewel Baillie, his brother Donald Macpherson Baillie, Mona Anderson, Henry Sloane Coffin, William Temple (the Archbishop of Canterbury), Violet Markham, John H Duncan, George Freeland Barbour and Cyril Forster Garbett (the Archbishop of York). Subjects include John Baillie's BBC broadcasts and Church of Scotland and YMCA matters.

Correspondence, press cuttings and related items, including letters from his brother Donald Macpherson Baille, Mona Anderson, David Smith Cairns, George Freeland Barbour and Alexander Martin. Many press cuttings relate to John Baillie's work around United States involvement in the Second World War.

Correspondence and related items received by John Baillie while he was in France with the YMCA, from friends, colleagues in others in (mostly) Britain, the United States and Canada and including the solicitors handling Richard Fowler's estate, his cousin Elizabeth Catherine (Elsa) Gallant, his brother Donald Macpherson Baillie, his cousin Ian Anderson, Reinhold Niebuhr, George Freeland Barbour and various publishers.