Photocopies of extracts from MacDermott's autobiography, 'An enriching life', privately printed in 1979, primarily concerning the death of his brother in France, Jan 1916, MacDermott's work in shell shop at Harland and Wolff Ltd, 1916, his experience of the Easter Rising, Dublin, Apr 1916, his military training in Belfast and the UK, 1916-1917, his service in France, Belgium and Germany, including the Battle of the Lys, Apr 1918, and the second Battle of the Marne, Jul-Aug 1918, his legal training, 1919-1921, and his reading of FM Sir Henry Wilson...his life and diaries by Sir Charles Edward Callwell (Cassell and Co, London, 1927) and Revolt in the Desert by Thomas Edward Lawrence (later Shaw) (Jonathon Cape, London, 1927) and also including a tribute by to MacDermott Lord Robert Lynd Erskine Lowry, Baron Lowry, Lord Chief Justice of Northern Ireland.

Bound copies of illustrated French military magazine Le Miroir nos 75-108, 1915. Transcripts of diary entries and letters describing his service in France and Belgium, 1914-1917, notably the Battle of Le Cateau, Aug 1914, first Battle of the Marne, Sep 1914, first Battle of the Aisne, Sep 1914, and first battle of Ypres, Oct-Nov 1914, with related photographs, newspaper cuttings and correspondence, 1914-1920.