Includes notes, memoranda and correspondence from and by Wing Commander Charles Anderson [former Director of Training, Air Ministry] and commander of RAF Hucknall [Nottinghamshire] and Group Captain Lachlan MacLean, including: Anderson on the RAF's lack of inspiration and poor morale, new Home Commands organization and levels of debt among RAF officers; MacLean on subjects including the shortcomings of aircraft, aircraft production and maintenance, officer levels, air defence exercises, ballistics experiments, general air defence, aircraft instrument failure, the visit of the German Air Mission, Britain's insular attitude and ignorance of foreign developments, the potential of new foreign aircraft, attack methods, the use of commercial aviation, the Fleet Air Arm and the RAF Reserve; Austin Hopkinson; Group Captain Robert Oxland on the difficulties of MacLean's idea for parachute bombs; [F A Lindemann, later 1st Lord Cherwell] on MacLean's ballistics theories; Reginald Pierson [Chief Designer, Vickers Armstrong Limited (Aircraft Section)] on MacLean's theories; a Vickers memorandum on an investigation into relative velocities and impacts of bullet between a fighter pursuing a bomber; typescript of a lecture by Air Chief Marshal Sir Hugh Dowding [Air Officer Commanding-in-Chief, Fighter Command] on fighter tactics; Air Marshal Sir Edgar Ludlow- Hewitt, Air Officer Commanding-in-Chief, Bomber Command] on the display for the German Air Mission; Wing Commander Frank Hopps on instrument failures; flight reports on instrument failures; notes on aircraft speed, range and training.Other correspondents include: Sir Maurice Hankey [Secretary, Committee of Imperial Defence] on the ethics of officers giving confidential information to WSC.Also includes: press cuttings, including an article from the Times by [Edwin Shepherd, Air Correspondent] on the aircraft shortage, and a cutting on air defence exercises; notes and copies of correspondence by WSC and Violet Pearman [Secretary to WSC].The majority of material in this file dates to 1937.