Papers relating to his life and career, 1915-1991, dated 1963, 1969 and [1991], principally comprising 'Nine lives, a soldier's story', a typescript memoir covering the period 1915-1991, including his service in North Africa and the Western Desert, 1939-1942 and 1943, the Middle East, 1942-1943 and 1954-1956, Normandy, 1944, and France, Belgium and Germany, 1945-1947, and hiswork as Director General of Fighting Vehicles, 1964-1966, and General Officer Commanding, Malta and Libya, 1967-1968, written in [1991].

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.

Papers relating to his service in World War Two, dated 1941-1946, 1941-1946, 1951, principally comprising semi-official and personal correspondence, 1941-1946, including letter to his wife describing events leading up to his dismissal from command of 7 Armoured Div, 1942; pamphlet on the Battle of Keren, Mar 1941, produced by Maj Gen Sir Nigel Trapp, HQEritrea District, for visit of Commander-in-Chief, Middle East Land Forces, to Keren battlefield, Eritrea, Mar 1947; Report to the Combined Chiefs of Staff by the Supreme Allied Commander South East Asia, 1943-1945 by AF Louis (Francis Albert Victor Nicholas) Mountbatten, 1st Earl Mountbatten of Burma (London, HMSO, 1951); operational notes and training instructions for 7 and 9 Indian Divs during the Burma campaign, 1943-1945; 'Warfare in undeveloped countries. Part 1: desert warfare', War Office publication written by [Messervy] in 1954; printed histories by Messervy and others describing operations in Burma by 12 Army, 14 Army, 4 Corps, 15 Indian Corps, 23 Indian Corps, and 25 Indian Div; Ministry of Information publications, dated [1945], concerning campaigns in the Middle East and Far East, 1941-1945, the Merchant Navy, 1939-1944, Combined Operations, 1940-1942, Britain's anti-aircraft defences, 1939-1942, and civil defence in the UK, 1940-1941, and the war effort on the Home Front, 1942-1944; Government of India publications,dated [1944-1946], describing the service of various divisions of the Indian Army during World War Two.