Includes notes and correspondence concerning research and corrections for Volume 1 of "The Second World War" by Lieutenant-General Sir Henry Pownall on subjects including: German air strength; Soviet aid to Germany, 1920 - 1932; the British military mission to Moscow [Soviet Union], 1939; air defence; the French Air Force; the Graf Spee; the defences of Scapa Flow [Orkney, Scotland]; French rearmament 1930 - 1939; the British Expeditionary Force; Finland; the rearmament survey of international affairs by 3rd Lord Chilston [earlier Eric Akers-Douglas]; the possibility of a French advance into Germany in 1939; the German forces at Narvik [Norway]; the origin of the Spitfire and the Hurricane; the 7th French Army; the Norwegian Campaign; the Russo-Finnish war, 1939 - 1940.Also includes notes and correspondence by various individuals including: General Carl Spaatz, Commanding General, United States Army Air Forces, on the United States's knowledge of German air strength before the war; General Alphonse Georges on the French Air Force, 1930 - 1940; George [Gordon] Allen on naval matters in the Norwegian Campaign; Brigadier William Fraser, Chief of United Nations Relief and Rehabilitation Administration, Paris, [and former Military Attache, Paris] on French preparedness for war, 1938 - 1939; "Boy", Lieutenant-General Sir Frederick Browning [Military Secretary], War Office, on subjects including 1st Lord Mountbatten; 3rd Lord Chilston (2); Lieutenant-General Sir Adrian Carton de Wiart [Commander of Central Norwegian Expeditionary Force] on the Norwegian Campaign and the evacuation of Namsos (2); Air Chief Marshal Sir Philip Joubert de la Ferte on the Norwegian Campaign; "Pug" [1st Lord Ismay, former Chief of Staff to WSC] on references in volume 1 to the Chiefs of Staff Committee; "Tommy", Lieutenant-General Sir Wilfrid Lindsell [Quartermaster-General of the British Expeditionary Force] on the British Expeditionary Force and the evacuation of Dunkirk (2); Sir Norman Brook [later 1st Lord Normanbrook, Secretary to the Cabinet] on the Supreme War Council minutes; Denis Richards, RAF Historian, on RAF strength 1934 - 1939 (2); Brigadier Henry Latham, War Cabinet Historical Section, on German army strength in 1938 (6); United States copies of Luftwaffe files on German air strength, 1939; statistics on the French and German armies; extract from the War Room Diary (August - September 1939) on subjects including the Air Ministry; map of the German invasion of Poland; copy of a letter from a seaman of the Acasta on the sinking of the Ardent, the Glorious and the Acasta by the Scharnhorst and the Gneisenau (1940). Also includes notes by WSC and William Deakin, and Elizabeth Gilliatt and "N S" [Jo Sturdee, later Lady Onslow], WSC's secretaries.Most of the material in the file dates to 1946 - 1949.