Papers created or collected by Maj Gen Sir Thompson Capper during the course of his military career, [1896-1914], dated [1888], [1896], [1900]-1902, 1905, 1907-[1914] , principally comprising papers relating to his work at Staff College, Quetta, [1908]-1911; printed pamphlets and notes on operations in Manchuria during the Russo-Japanese War, 1904-1905, dated [1908-1914]; printed pamphlet and notes relating to operations against Dervish rebels in British Somaliland in 1913, dated [1913]; papers relating to his service with 13 Infantry Bde, notably including printed training instructions, 1907 and 1909, and his circular to officers of 3 Infantry Bde summarising the official report on army manoeuvres, Dublin, 1910. Three printed books, 1888, 1902 and 1908, comprising books on Napoleon I (Napoleon Bonaparte) and the Franco-Prussian War of 1870-1871 and The Second Afghan War (John Murray, London, 1908), an official account produced in the Intelligence Branch, Army HQ, India, annotated by Capper.

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.