Includes typescript, galley, and manuscript proofs annotated with suggested corrections and amendments from various people including: "F W D" [William Deakin, literary assistant], WSC, "E M" [Sir Edward Marsh], [Isaiah] Berlin, and "H R P", Lieutenant-General Sir Henry Pownall.Also includes: proofs of contemporary letters from WSC for incorporation into the chapter; sections provisionally intended to feature in chapters entitled "Air Defence Research" and "After Munich [Germany]", and provisional chapter proofs entitled "August 1939"; a letter and notes from Pownall on precautionary measures taken before the outbreak of war; chronology of events for June to August 1939; preliminary notes on Italy and Germany (June to August 1939), and the "eve of hostilities".