Papers, 1908-1974, including Wynne's letters home to his father from Germany, 1908-1911, including detailed descriptions of illegal duelling by students in Hannover, Germany and calling card of General Otto von Emmich, Commander, 10 Army Corps, Hannover, Germany, 1909-1915. Bound typescript account by Wynne, 29 Jul-4 Sep 1914, on his experiences in the BEF's (British Expeditionary Force's) retreat from Mons, Belgium, the Battle of Le Cateau, France, and capture by German forces during the Battle of Le Cateau, France, 26 Aug 1914, written as a POW in Germany, Sep-Oct 1914. Correspondence, press cutting, menus and Christmas cards relating to time as POW, Germany and Netherlands, 1914-1918, including letters written to parents from Portobello Barracks, Dublin, immediately before embarkation for France, Aug 1914; cutting from The Morning Post , 3 Sept 1914, listing Wynne as killed; letter home from POW camp, Magdeburg, Germany, 30 Dec 1914, referring to incorrect report of his death; menus, playing cards and Christmas cards with watercolours by Wynne and signatures of fellow POW's. Correspondence and papers relating to Wynne's work for the Historical Section, Cabinet Office, and to his publications, 1928-1958, including two letters from Maj Gen Sir Ernest (Dunlop) Swinton relating to German defence systems, 30 Sep 1939, and to Wynne's book, If Germany attacks. The battle in depth in the west (Faber and Faber, London, 1940), 2 Feb 1940; manuscript diary and typescript report by Wynne on an official visit to North Africa, 12 Apr-23 May 1943; letters to Wynne from Lt Gen Sir Kenneth Arthur Noel Anderson, General Officer Commanding 1 Army, North Africa, rebutting allegations reported to Wynne by troops of 8 Army of Anderson's poor handling of 1 Army in operations in North Africa, May 1943; three letters from Capt Basil Henry Liddell Hart, dated Jan-Jul 1958, relating to Wynne's article on the Schlieffen plan and The Schlieffen plan. Critique of a myth by Professor Gerhard Ritter (Oswald Wolff, London, 1958). Correspondence, 1939-1974, relating to Wynne's publications, including his book If Germany attacks. The battle in depth in the west (Faber and Faber, London, 1940). Also photograph of Wynne's father, General Sir Arthur Singleton Wynne, c.1914.

Papers, mainly on World War One compiled by Sir Edward Louis Spears, 1851-[1974]; notably including official World War One correspondence and telegrams, to GHQ, 1 Army, Gen Douglas Haig, Lt Gen Sir Henry Wilson and other officers, on infantry composition, munitions and artillery, lists of officers, colonial troops, morale, observation and intelligence gathering, the lessons of specific campaigns, the employment of tanks, casualties, prisoners of war (POWs), training, public opinion, operational orders for the French 6 Army by Gen Emile Fayolle, and more generally relations between the French and British armies, meetings, views and opinions by and concerning French C-in-C Henri-Philippe Petain, French Northern Army Commander, Ferdinand Foch, and Robert Nivelle, French C-in-C, 1916-1917, an interview with Georges Clemenceau, French Prime Minister from Nov 1917, US, Japanese, Greek and other correspondence and communications over Siberia, Japan, Finland, Bulgaria, and demands for independence by Eastern European peoples, US participation in the War and opinions on President Woodrow Wilson, Italian military offensives, precis of interviews with corps and army commanders, manuscript diary (1915), on the Russian civil war, post-war commerce, letters to Winston Leonard Spencer Churchill, 1914-1920 on topics including the international political and military situation, notably in Russia and eastern Europe, and the progress of the Paris peace conference, 1919 prior to the signing of the Treaty of Versailles (Spears Section 1); unpublished material collected by Spears for his publications on the War, including a report of events for 122 Bd, Royal Field Artillery (1916), detailed memoranda and correspondence concerning operations notably comprising copy letters between FM Sir Douglas Haig, Gen Nivelle, and others including to the Chief of the Imperial General Staff, and on reinforcements, the German postions, the Calais Agreement of February 1917, 1 and 3 Army operations, Franch Army mutinies in 1917, extracts from a diary covering the Battle of Arras, Apr 1917, the politics of liaison, interviews with French and British officers, including French C-in-C Henri-Philippe Petain and Lt Gen Sir Launcelot Edward Kiggell reflecting on strategic and other concerns, 1916-1938 (Spears Section 2); printed material by other authors on World War One used by Spears in his published studies, [1917-1964] (Spears Section 3); draft notes and chapters for Spears' published works on World War One, [1919-1974] (Spears Section 4); original source material and notes by Spears on the 1870 Siege of Paris, mainly rough notes and draft chapters on the Siege, original and copy letters from participants describing events and an exercise book containing lecture notes redating the Franco-Prussian War, [1851-1974] (Spears Section 5); newspaper reviews of Spears' books and critics' letters, 1930-1969 (Spears Section 6); material relating to a war memorial at Mons, 1936-1968 (Spears Section 7); personal papers, mainly articles on the life of Spears [1918-1974] (Spears Section 8), maps, principally of Arras, Bullecourt and Mons, during 1917 [1917]-1959 (Spears Section 9); photographic material, post cards and watercolour sketches, including of trenches, damaged buildings, troops and officers, and a visit to the Balkans in 1920, 1914-[1920] (Spears Section 10); photocopies of some items of Second World War material transferred to Churchill College, Cambridge, mainly on the fall of France, General de Gaulle, and French resistance, [1940-1943].