Papers relating to service as Quartermaster General of the BEF (British Expeditionary Force) in France and Belgium during World War Two, including narratives, war diaries, reports and memoranda, 1939-1941; papers relating to service as Lt Gen in charge of Administration in the Middle East, including narratives, a volume compiled by the Q Staff entitled Maintenance of the Eighth Army...from El Alamein to Tunisia , 1943, and memoranda and newscuttings on the Middle East Base in Egypt, 1943-1948; papers relating to service as Principal Administrative Officer to the Indian Command, comprising texts of speeches and articles on Indian economy and the India Base, 1943-1945; papers relating to post-war life and career, mainly texts of lectures and articles and newspaper cuttings on international relations in the Middle East, especially the Suez Crisis of 1956.

Papers relating to McNeill's career, 1942-1946, notably on Army-Air collaboration, 1942-1945, including typescript 'Eighth Army training memorandum No 1' by Lt Gen Bernard Law Montgomery, General Officer Commanding 8 Army, Middle East Forces [1942]; typescript memorandum by McNeill 'Recommendations for reorganisation of AASC (Army-Air Support Control)',1942; printed 'Middle East training pamphlet No 3B (Army and RAF). Direct air support', issued by General Headquarters, Middle East Forces and Headquarters, RAF, Middle East, 1943; typescript war diary of Detachment A, Air Support Control, 5 Corps, Italy, Mar-Jun 1944; typescript report produced by Headquarters 21 Army Group, British Liberation Army, North West Europe, entitled 'Notes on airsupport, June-October 1944', Nov 1944; typescript notes by McNeill entitled 'Offensive air support in the Burma campaign, 1944-1945'; two typescript draft chapters for a projected book entitled 'Air support in North Africa, Pantellaria, and Sicily, 1942-1943' and 'Air support in the Italian campaign, 1943-1945' [1946]; typescript account by Roy Smith entitled 'Air support in the desert: an account of the use of air forces in support of the Army from the Gazala battles in 1942 to the end in Tunisia', 1988.

Edition of War Neuroses in North Africa, a study prepared for the US Air Surgeon's Office, US Army Air Forces, by Lt Col Roy R Grinker, US Army Air Forces, and Capt John P Spiegel, US Army Air Forces, Sep 1943, relating to US Army and Army Air Forces neuropsychiatric casualties encountered by medical officers during World War Two generally and the Tunisian Campaign, Jan-May 1943, specifically