Papers of Barrie Pitt relating to military history, 1940-1991, including draft of book Special Boat Squadron by Pitt, annotated with corrections; draft of book Crucible of War: Western Desert 1941 by Pitt, annotated with corrections; transcripts of radio and television broadcasts on the First and Second World Wars including transcripts of the BBC 1 series 'Grand Strategy' on the Second World War, 1972; scripts and other papers relating to the BBC TV series, 'The Great War', 1964 and transcripts of 'European Service: General News Talk' 26 Jun 1964-20 Aug 1964; correspondence chiefly on the subject of historical research; photographs of Malta during the Second World War; copy photographs used by Pitt to illustrate his books and articles, chiefly photographs of the North African Campaign, to illustrate Pitt's book Crucible of War: Western Desert, 1941, also photographs of Adolf Hitler, Albrecht Kesselring; Sicily, 1943 and aerial warfare, Malta, 1940-1943; papers used for research including press cuttings, magazines and magazine cuttings, offprints of articles and correspondence notably on the subject of Europe 1900-1914 and the Middle East; papers relating to Basil Liddell Hart including photographs, draft articles by Liddell Hart, copies of Liddell Hart's correspondence and press cuttings; draft papers by Eric Dorman O'Gowen and related correspondence and copies of British History Illustrated.

Papers of Vice Admiral Sir Ian McGeoch, 1946-1996, including papers from McGeoch's naval career including his time as commander of Royal Navy Base Portsmouth, 1955; as Naval Liaison Officer, RAF Coastal Command, 1955-1956 and as Flag Officer, Submarines and Northern Ireland and Scotland, 1965-1970.Research notes, essays and transcripts of talks by McGeoch on naval topics including research notes for The Princely Sailor: Mountbatten of Burma; editorials and articles by McGeoch for Naval Forces; correspondence including with Vice Admiral Sir Louis Le Bailly, 1993-1994; Sir John Hackett and Michael Howard, 1971; papers relating to the Royal United Services Institute for Defence Studies including correspondence regarding submissions and talks by McGeoch, newsletters, annual reports, articles by McGeoch, council minutes, charter, bye-laws and standing orders, 1950-1991 and printed books and journals on military history.Papers and correspondence on topics including party politics in McGeoch's local area, particularly the Conservative Party, 1971-1974; the British Atlantic Council, 1974-1994; national security, disarmament and arms control, 1974-1986; the security of North Sea oil rigs, 1975-1981; fisheries and pollution in the North Sea, 1976; the Baltic and Mediterranean protection of the marine environment; UK defence policy, 1981; the British Atlantic Committee, 1983-1984; the Atlantic Treaty Association Assembly, Toronto, 8-13 Oct 1984; House of Commons Defence Committee, 1986-1988; the future of the Royal Navy Engineering College, Manadon, and McGeoch's campaign to keep it open, 1993; McGeoch's letter to The Times and on whether Polaris submarines should have a Christian launching service and the education of Royal Navy officers, 1993-1994.

Papers of Donald Macmillan comprise a typescript document entitled Rudolf Hess: Enigma - 1941 by Donald Macmillan, 1980, on the arrival of Rudolf Hess in Scotland, May 1941, which Macmillan witnessed while serving in the Highland Light Infantry.

Papers of Maj Gen Ian Helstrip Baker, notably concerning armoured warfare, 1955-2003, including instructions, memoranda, reports and notes on training exercises including Exercise GAMEBIRD, Cyclops Sqn, 2 Royal Tank Regt, Libya, Jul 1964; Exercises OPEN GLOVE and TREBLE CHANCE, Cyclops Sqn, 2 Royal Tank Regt and 16 Parachute Bde Group, Sep 1964; Exercise DOUBLE STRETCH 72, 7 Armoured Bde, Germany, Feb-Mar 1972; Exercise RED RAT, 7 Armoured Bde, Germany, Sep-Oct 1972; MACLEOD, 7 Armoured Bde, Germany, Aug-Sep 1972; Exercise READY RAT, 7 Armoured Bde, Germany, 11 Sep 1972; Exercise LONG LOOK, for 7 Armoured Bde trials of ZB298 radar, Oct 1971-Apr 1972; organisational trial Exercise SQUARE RAT, Germany, 28 Dec 1972; Exercise FIRST STRETCH 73, 7 Armoured Bde, Germany, Feb 1973; Exercise DOUBLE STRETCH 73, 1 Armoured Bde, Germany, Mar-Apr 1973; Exercise HURST PARK 73, 7 Armoured Bde, Germany, Apr 1973; Exercise QUEEN'S PATROL, 7 Armoured Bde, Germany (relating to operations in Northern Ireland), May 1973; Exercise RED RAT 73, 7 Armoured Bde, Germany, Aug 1973; Exercise FOUR SQUARE, 7 Armoured Bde, Germany, Sep-Nov, 1973; photographs of [FV214 Conqueror battle tanks], Royal Armoured Corps, Bovington, Dorset and photograph of an amphibious jeep, partially submerged, 1960; photograph of Crown Prince Birendra of Nepal and others watching a Hornet Launcher vehicle being loaded with Malkara missiles by personnel of Cyclops Sqn, 2 Royal Tank Regt, Candahar Barracks, Tidworth, 15 Apr 1964; captioned photographs relating to Baker's visit to [1 Bn, Royal Green Jackets], Belfast, Northern Ireland, including: battalion personnel on patrol; Falls Road and Hamilton Street, Belfast, showing the aftermath of explosions; IRA weapons discovered, including rifles, knives, an RPG7 rocket launcher and RPG7 rockets, a car bomb and smaller incendiary devices, Aug 1972; photographs of Baker, Nov 1979 and in Brigadier's uniform; handing over briefing notes by Baker as Deputy Assistant Adjutant General, 17 Gurkha Div, Overseas Commonwealth Land Forces, 25 Jun 1962; training instructions for Cyclops Sqn, 2 Royal Tank Regt, Tidworth, Mar 1963-May 1964; briefing notes on the Parachute Sqn, Royal Armoured Corps, by Baker, 1964; Royal Armoured Corps training pamphlet, 'The technique of shooting from AFVs. Part 4: the application of fire from Saladin armoured cars' (MoD, Feb 1967); 1 Royal Tank Regt standing operational procedures, Jun 1969; briefing notes for Baker as Commander, 7 Armoured Bde, by Administration and Quartering staff, 7 Armoured Bde, 18 Jan 1972 and by Brigade Majors, 7 Armoured Bde, 7 Feb 1972; 7 Armoured Bde standing operating procedures relating to headquarters and operations (vol. 1), and administration and logistics (vol. 2), Feb 1972; training directives by Baker as Brigadier Commanding 7 Armoured Bde, Mar-Sep 1972; notes on the creation and history of the Desert Rat badge of 7 Armoured Bde, 1940-1972; training directive by Baker as Brigadier Commanding 7 Armoured Bde, Mar 1973; correspondence and accounts by Lt Col R A Pascoe, 1 Bn Royal Green Jackets, of the battalion's service in Belfast, 8-14 Oct 1972.