Letter from WSC to Lord Rothermere, on the size of the German air force. Stating that his figure of 500 aircraft related purely to military aircraft and did not take into account conversion from civil aviation. Hoping that Rothermere would publish his information in the Daily Mail. "Even at my figures, which I gather the Government do not dispute, the prospect is most alarming, and their measures hopelessly inefficient" [carbon].

Letter from Desmond Morton to WSC, on the radius of action of Germany's new bomber, and on Archambaud's Statement on the French Chamber of Deputies on the number of pilots in Germany.

Letter from Desmond Morton to WSC, on statement by the French Air Minister, Victor Denain, in which he claimed that the Germans had 1100 aircraft capable of immediate use or rapid conversion as service aircraft, and between 3500 and 4000 fully qualified pilots. His own estimate was slightly lower at 1000 military aircraft and over 3000 pilots.

Letter from Francis Bertram, Air Ministry, to WSC, on figures for Pilots' licenses issued in Britain. Stating that 7355 licences had been issued since 1919, and that the increase on the last year had been 1200. There were 2922 current private licences and 512 "public transport". Also stating that the reason why so many pilots did not keep their licence current was entirely financial, as the cost of flying at a club was 2l 10s per hour.

Letter from Charles Mallett [Financial Secretary, War Office] to [WSC] answering a note from [WSC] on behalf of Richard Haldane [Secretary of State for War] concerning the Aerial Navigation Bill, offering to give any assistance [WSC] requires. Signed manuscript, annotated "thanked".

Letter from WSC (Colonial Office) to Lord Curzon on a memorandum on the supply of armoured cars to King Hussein of the Hejaz and the risk that the British civil aviation mission to Japan could upset relations with the United States. Typescript copy.

Note from [Edward Marsh] to [WSC] that there is no evidence of WSC having been consulted [when Secretary of State for War and Air, about an aviation mission to Japan].

Minute from CAS to the Secretary of State for Air [Frederick Guest] on the action taken in connection with the despatch of a civil aviation mission to Japan. Sent by Guest to WSC.

"Precis of action taken in connection with the Japanese request for the despatch of an instructional mission (aviation) to Japan." Originally attached to CHAR 2/115/108.

Letter from Lord Curzon (Foreign Office) to WSC giving the facts relating to the despatch of a British civil aviation mission to Japan to counter the suggestions in France and in the newspapers of William Randolph Hearst that Britain is helping Japan to prepare for a future war with the United States.

Letter from Lord Curzon (Foreign Office) to WSC enclosing a letter from Frederick Guest showing that no official assistance was given to the civil aviation mission to Japan [see CHAR 2/116/21-23].

Letter from Frederick Guest (Air Ministry) to Lord Curzon on the steps which were taken to ensure that the civil aviation mission to Japan led by the Master of Sempill [later Lord Sempill] could not be said to have had official backing. Typescript copy sent with CHAR 2/116/20.

Letter from [Frederick Guest] to Major-General Sir Frederick Sykes stating the terms on which he proposes to renew Sykes's appointment as Controller-General of Civil Aviation. Carbon typescript copy.

Letter from [Edward Marsh] to Wing-Commander C Erskine-Risk conveying WSC's thanks for his letter describing his flight in the King's Cup air race with Spenser Grey and expressing WSC's admiration for the way in which they coped with their problems. Carbon copy.

Letter from R Blackburn, managing director of the Blackburn Aeroplane and Motor Co Ltd (Olympia, Leeds, [Yorkshire]) to [Edward Marsh] expressing thanks for WSC's appreciation of the firm's efforts [in preparing the aircraft WSC had entered for the King's Cup air race].

Letter from Harold Perrin, secretary of the Royal Aero Club (3 Clifford Street, [London]) to WSC (2 Sussex Square) returning his entry fee for the August Open Handicap air race because Spenser Grey's aircraft was damaged in an earlier race and he was unable to compete.

Letter from C L Bullock (Air Ministry] to WSC reminding him, with reference to his wish to fly from Biggin Hill [Kent] to Tidworth [Hampshire] next week, that Monday is a Bank Holiday when the Air Ministry and RAF stations are closed.

Letter from Richard Alexander, aircraft, electrical and motor engineer (1 St Luke's Road, Maidstone, [Kent]) to WSC enclosing CHAR 2/159/59 and asking him to get "a sportsman" from among his friends to take an interest in his (Alexander's) helicopter idea.

Poster annoucing that an inventor [Richard Alexander of Maidstone, Kent] has devised an advanced helicopter design and needs financial help to develop it. Sent with CHAR 2/159/57-58.

Letter from Frederick Guest (7 Aldford Street, Park Lane, [London]) to WSC complaining about Conservative candidates standing in the constituencies of right-wing Liberals, announcing that he is going to assess the potential for air routes from the Cape to Cairo and expressing confidence that he will hold his own seat in Bristol.

Letter from Richard Haldane [later Lord Haldane] (War Office) to WSC reporting that he is going to Aldershot [Hampshire] to examine the airship construction department there, and that he does not think the Government can usefully intervene in the deveopment of [Louis Brennan's] monorail system. States that he is ready to take up WSC's plan of a police territorial brigade.

Telegram from Prime Minister of Australia [John Curtin] to WSC stating that the Australian Government are willing to accept Eire's omission from the Conference at Ottawa [Canada] on Civil Aviation.

Telegram from Field Marshal Jan Smuts [Prime Minister of South Africa] to WSC marked "Secret" supporting Eire's omission from the Conference at Ottawa [Canada] on Civil Aviation and suggesting that the best policy towards Eire and such matters is to wait until the war is over and Eire has clarified its position in relation to the Commonwealth.