Typescript lecture notes on the training of officers, School of Military Engineering, Chatham, Kent [1940]; typescript memorandum by Young entitled 'Notes on Engineer intelligence', 1943; typescript notes by Young on the effects of bombing on port facilities in North Africa, 1943; typescript article by Young entitled 'The development of land mine warfare', 1944; typescript notes by Young entitled 'In Macedonia, 1916-1917', written in 1946, with a manuscript letter from Lt Col Anthony Heritage Farrar-Hockley, Commanding Officer 3 Bn, The Parachute Regt, thanking Young for the use of the notes, 1962; typescript volume entitled 'The Brigade Headquarter's Story. The story of the 130th Brigade HQ (43rd Wessex Division) 1939-1946', edited by S G M Liddle, with four photographs and typescript list of former 130 Bde officers, 1951; correspondence relating to Young's appointment as Hon Col, 121 Army Engineer Regt, Royal Engineers, Territorial Army, 1952-1959; edition of Salonika memories 1915-1919 by G E Willis (Salonika Reunion Association, Newbury Weekly News, Newbury, 1969); edition of Ten Chapters 1942 to 1945 by FM Sir Bernard Law Montgomery (Hutchinson, London, 1946); articles from The Royal Engineers Journal, 1932-1934, including article by Young entitled 'The diary of an RE subaltern with the BEF in 1914'.

Papers relating to training in the RN, 1935-1937, principally comprising unsigned text on 'The training of seamen', [1936]; copies of Willis' letters to the Training Commander, RN Barracks, Chatham, concerning the training of new entries, 1935-1936.

Papers and photographs, 1913-1958, including fourteen panoramic photographs produced by Survey Company, Royal Engineers, Salonika Force, labelled to show topographical details, Feb 1917; 'Salonika fire', 18-19 Aug 1917, a series of 24 official photographs of the city, taken by Survey Company, Royal Engineers and Royal Flying Corps; two photographs, one of a uniformed group including Stevenson, [1946], and the other of an unidentified painting showing construction work on an airfield [1940]. Papers relating to the evacuation of Royal Engineers establishments in Beit-Nabala and Haifa, Palestine, 1948. Editions of Notes on building materials and their uses (School of Military Engineering, Chatham, 1913); 'RMA (Royal Military Academy) Magazine', Vol XV, No 58, Nov 1914.

Copies of detailed narrative diaries and transcripts of Naval signal messages on RN operations, 1939-1945, including service at RN Gunnery School, Chatham, Kent, 1939, on HMS JERVIS in the North Sea, 1940, with the Mediterranean Fleet, 1940-1941, with Combined Operations Command, Dieppe and Normandy, 1942-1944, and the British Pacific Fleet, 1945-1946. Also, typescript copies of operational orders for Operation NEPTUNE, Normandy, 1944.