Unpublished typescript memoirs, 1893-1969, including: accounts of life in the British colony in St Petersburg before World War One; work in the British Military Mission at the Russian War Office; events witnessed during the Russian Revolution and conditions for the Russian Army during the Revolution, 1917-1918; evacuation of British personnel from Russia, February 1918; negotiating with Finnish Red and White commanders while travelling through Finland during the Civil War; liaising with Admiral Aleksandr Vasiliyevich Kolchak and the White armies in Harbin, China, 1918; liaising with General Mikhail Konstantinovich Dieterichs, Czechoslovak Legions, and a special mission to Ataman Grigory Mikhaylovich Semyonov (or Semenov) in Chita, Transbaikalia, November 1918; activities as General Sir Harry Knox's liaison officer at the White Army Headquarters in Omsk, November 1918 - November 1919; the retreat from Omsk to Vladivostock following the success of the Bolshevik army, November 1919 - March 1920; stationing in Gibraltar and Egypt, 1921-1922; life and work in Simla, Waziristan and Kamptee, India, 1922-1928; work as an intelligence officer, Meshed, Persia (Iran), 1928-1931; life and work in Bombay, Ajmer, Jhansi, Alwar and Delhi, India, 1932-1935, including description of rioting under the Maharajah of Alwar; experiences working in India, China and Egypt during World War Two, including visit to Palestine; account of working in the post-war timber trade and as a consultant in the Russian Section of the London Chamber of Commerce. Also article 'Anglo-Russian Timber Trade: Personal Reminiscences and Reflections of Col L Steveni', The Timber Trades Journal , 11 March 1961, and article by Richard J Aldrich, University of Nottingham, from Modern Asian Studies 32, 1 (1998), pp. 179-217, entitled "Britain's Secret Intelligence Service in Asia during the Second World War" including analysis of Steveni's role as Director of British Secret Intelligence Service (SIS) in Asia.

Papers, 1940-1942, including correspondence, reports and memoranda relating to gunnery techniques and tactics, when Stanford commanded Support Group, 8 Armoured Div, Middle East, 1941-1942. Typescript summary of points arising from Exercise DRAGON, Jan 1941, with typescript precis of lecture 'Tactical handling of German and Italian armoured formations'; typescript memoranda by Maj Gen Charles Wake Norman on armoured tactics, Apr 1941; typescript memorandum on point of aim for the 2 pounder anti-tank gun, [1941]; typescript memorandum relating to the organisation of self propelled artillery, Royal Horse Artillery, Jan 1942; typescript papers on the role of an air observation post in an armoured division, with typescript precis of lecture entitled 'The air observation post', 1942. Correspondence with Lt Col Rawdon Hoare, Commanding Officer, 5 Regt, Royal Horse Artillery, 1940-1942, on anti-tank exercises; deployment of Royal Horse Artillery when supporting armoured troops and regimental targets.

Diary, Jul 1944-Jun 1945, covering his service as Consulting Surgeon, 8 Army, Italy.

Memoir of his service with the Royal Scots Greys in the Middle East, 1942-1943, Italy, 1943-1944, and North West Europe, 1944-1945, written from his own experiences and using regimental war diaries, 1947.

Typescript memoir entitled '37 years in the IMS [Indian Medical Service]', [1938], notably concerning the treatment of tuberculosis in India, 1910-1937, service in Waziristan, North West Frontier, India, 1901-1902, prison service, Jhansi, 1906-1907, and service in World War One with the Mesopotamia Expeditionary Force, 1916-1918, 304 pps.

Papers relating to her life in Singapore, 1941-1942, dated 1941-[1959], principally comprising diaries and personal letters describing her voyage to Malaya, 1941, and life in Singapore, 1941-1942; press cuttings, 1942, 1945-1946, relating to R Adm Ernest John Spooner's appointment as R Adm Malaya, 1942, and to his death on the island of Chibia (Tjibia, Tjebia) following his escape from Singapore, 1942; photographs, 1940, 1946, notably of Capt Sir David Bone and his search party on Chibia during their search for R Adm Spooner, 1946; correspondence relating to Megan Spooner's claim for war damages, 1945-1947. Also an account, 'Fall of Singapore and the Dutch East Indies and defence of Ceylon' by Capt Andrew Nichol Grey, RN, detailing his experiences on the staff of the Commander-in-Chief, Far East, ACM Sir (Henry) Robert (Moore) Brooke-Popham and subsequently Gen Sir Henry Royds Pownall, from early 1941 to Feb 1942, written [1946].

Letters home by Spicer from France, Sep 1915-Sep 1916 and Apr 1917-Nov 1918, with nine Field Service Postcards, Western Front, 1915-1917. Letters home from Lt Roger Lancelot Spicer, 1 Bn, King's Own Yorkshire Light Infantry, Apr 1942-May 1944, killed in action near Anzio, Italy, May 1944; Edition of Letters from my son, 1942-1944, Roger Lancelot Spicer, edited by his father, Capt Lancelot Dykes Spicer (Unwin, London, 1946). Typescript correspondence with Capt Basil Henry Liddell Hart, 1949-1963. Correspondence with former members of 9 (Service) Bn, King's Own Yorkshire Light Infantry, 1963-1979, including Liddell Hart and Brig George Fothergill Ellenberger, mostly relating to the Battle of the Somme, 1916.

Papers dated 1942-1943 relating to the campaign in the Western Desert during World War Two comprising the history and organisation of Field Maintenance Centres, later known as Field Maintenance Areas, and message from Gen Bernard L Montgomery commending troops of 8 Army following the German defeat at El Alamein and capture of Tripoli, Jan 1943.

Papers relating to the life and military career of Maj David Stuart Gilbert Smith, 1950-2003, including: detailed letters home from Korea, 1952-1953; account, 'The third Battle of "The Hook"', by Maj Rudolf Edmund Austin, c 1953; details of wanted members of Ethniki Organosis Kyprion Agoniston (EOKA), Cyprus, 1956; instructions on personal security for members of 22 Bn Special Air Service (SAS), [1968]. Album of photographs and press cuttings, 1950-1957, relating mainly to Gilbert-Smith's rugby union career, but also including snapshots of Gilbert-Smith in Korea, 1952, press cuttings relating to his MC following the Battle of 'The Hook', Korea, May 1953, and press cuttings relating to his service with 1 Bn, Duke of Wellington's Regt, Cyprus, 1956; photograph album relating to Gilbert-Smith's command of 22 Bn Special Air Service Mountain Training Centre, Bavaria, Germany, 1965. Winning hearts and minds (Pen Press Publishers Ltd, London, 2003), Gilbert-Smith's theories of leadership, drawing on his military experience.

Copy of typescript diary of his service on the Western Front, 1915-1917, notably in the second Battle of Ypres, Apr 1915, the Battle of the Somme, Aug-Sep 1916, and the Battle of Arras, Apr 1917.

Photograph album relating to his service with the Royal Naval Air Service, Gallipoli, 1915.

Papers relating to his military career, 1939-1962, principally his service in Burma, 1939-1941, UK, 1941-1943, North Africa, 1943, Italy, 1943-1944, and Korea, 1955-1956, notably including battalion orders for 2 Bn, Sherwood Foresters, 1945; German propaganda leaflets for US and Allied troops, [1944]. 'An ancient Yorkshire family', a history of the Slingsby family, written by Slingsby in 1989.

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.

Papers of MRAF Sir John Slessor, 1965-1968, including: correspondence regarding the Defence Review on Naval Airpower with Air Chief Marshal Sir Charles Elworthy; W M Mills, Ministry of Defence; Edward Shackleton, Ministry of Defence; Hawker Siddeley Aviation Ltd; Air Marshal Sir Kenneth Cross, Transport Command; and others, 1965-1968, particularly debating the use of aircraft carriers. Correspondence regarding the Battle of the Atlantic with Vice Admiral Sir Peter Gretton; Capt Stephen Roskill, historian; the Air Historical Branch; the Naval Historical Branch; and others, 1966-67, including statistical analysis of efficacy of RAF and information and statistics from Air History Branch regarding U-Boat destruction, 1955. Correspondence with Capt B H Liddell Hart, 1965; with Rear Admiral Samuel Morison, USNR, 1968; with Professor Arthur Marder, 1966. Articles by Slessor relating to the Defence Review on Naval Airpower, including: 'An Integral part of the Fleet', 1964; 'The Capital Ship Complex', 1965; 'Air Power - Seabourne or Shore-based', 1965; 'Naval Air Power - Is it Worth It?', 1965; 'The Story of Jutland: Some reflections on Vol. 3 of "From the Dreadnought to Scapa Flow" - Arthur J Marder', 1966; 'Air Power and the Defence Review', 1966; 'Air Power East of Suez', 1966; 'The Purchase of the F111', 1966; 'Meeting Today's Defence Needs: Virtues of Shore-Based Planes', letter to The Times , 1968; and 'The Air League's Memorandum on Defence - January 1967', 1967. Also articles by others including: 'The case for the Aircraft Carrier' by Fletcher Pratt, and response 'The Case for Land-Based Air Power' by Francis V Drake, The Reader's Digest , 1949; German, Italian and Japanese U-Boat Casualties during the War: Particulars of Destruction , (HMSO, 1946); A memorandum on Defence , The Air League, 1967; and 'Merchant Aircraft Carriers' by Kenneth Poolman, Air Pictorial , Oct 1968.

Self-published edition of Chinese Ink and Brush Sketches of Prisoner of War Camp Life in Hong Kong (Hong Kong, 1948) by Lt Alexander V Skvorzov, Hong Kong Volunteer Defence Force [1941-1945], including fourteen ink and brush sketches drawn by the author whilst he was a prisoner of war in Hong Kong, 1943-1945

Two typescript drafts of 'Failure in Malaya', an account of the Malayan campaign and the fall of Singapore, 1941-1942, written in [1963] and later published as Singapore, too little, too late (Leo Cooper, London, 1970).

Papers and photographs, 1888-1924, 1972, mostly manuscript letters by Simpson-Baikie to his wife, Marion Evelyn Simpson-Baikie, Lady Simpson-Baikie, 1906-1919, including letters whilst on active service on the Western Front, Gallipoli, Salonika and Palestine, 1914-1918; four manuscript letters from Simpson-Baikie to his mother-in-law, Emilita Miller, 1904-1918, and three manuscript letters from Simpson-Baikie to his daughter, Jean Simpson-Baikie, 1917-1918. Also, manuscript letter from Gen Sir Ian Standish Monteith Hamilton to Jean Miller Hamilton, Lady Hamilton, asking her to inform Marion Evelyn Simpson-Baikie that Simpson-Baikie has been chosen to serve at Gallipoli, 1915; manuscript letter to Simpson-Baikie from Gen Sir Horace Lockwood Smith-Dorrien, Governor of Gibraltar, on adverse comments about Smith-Dorrien in 1914 (Spiers, London, 1919) by FM John Denton Pinkstone French, 1st Viscount of Ypres, 1920. Eleven photographs and two negatives relating to Simpson-Baikie's career, 1888-1920, including three photographs of Simpson-Baikie, 1888, [1904]; Lt Gen Horatio Herbert Kitchener, 1st Baron Kitchener of Khartoum, General Officer Commanding in Chief, South Africa, with his Aide de Camp, Lt Francis Aylmer Maxwell [1901]; Maj Gen Hubert Ion Wetherall Hamilton, Maj Gen General Staff, Mediterranean Command, 1911; Gen Sir Ian Standish Monteith Hamilton at Charing Cross station, London, on his departure for Gallipoli, 13 Mar 1915; aerial photograph of the French camp at Sedd el Bahr, Gallipoli, Turkey, 1915. Typescript letter to Jean Morley Kennerley (née Simpson-Baikie) from Professor Robert Clifford Walton concerning Smith-Dorrien, 1972.