Correspondents on defence inventions and suggestions from the general public include: Laurence Boutwood [Secretary to 3rd Sea Lord and Controller of the Navy]; Wing Commander William Elliott [Assistant Secretary], Committee of Imperial Defence (11); Vice-Admiral Sir Reginald Henderson [3rd Sea Lord and Controller of the Navy]; Rowland Jerram [Secretary to 1st Sea Lord]; [Thomas] Graham Charlton, Private Secretary to the Secretary of State for War.Subjects include: schemes for munitions; aircraft defence; anti-aircraft defence; shortage of medical supplies; atomic research.Also includes: notes and copies of correspondence by WSC and Violet Pearman and Kathleen Hill [Secretaries to WSC] to individuals listed above and also to others including [Harry Sellar], Secretary, Committee of Imperial Defence and Brigadier-General Harold Carey.