AWM81 39 PART 2 - [British Ministry of Home Security:] Air Raid Precautions Department. Circulars [on Civil Defence matters in Great Britain] 19 Sep 1939 - 3 Nov 1939
Official Record AWM2022.1750.99 Second World War, 1939-1945AWM81 39 PART 2 - [British Ministry of Home Security:] Air Raid Precautions Department. Circulars [on Civil Defence matters in Great Britain] 19 Sep 1939 - 3 Nov 1939