The Australian War Memorial Collection. Test site
AWM81 60 - [British Ministry of Home Security:] Air Raid Precautions Department. Research and Experiments Branch. Notes on Load Factors
AWM81 46 - [British Ministry of Home Security:] Air Raid Precautions Department. Circulars and bulletins. "Equipment"
AWM81 59 - [British Ministry of Home Security:] Fires and Firefighting. Notes on the Air Raid Fires and Air Raid Precautions and Firefighting
AWM81 38 - [British Ministry of Home Security:] Indexes to Air Raid Precautions and Home Security Circulars
AWM81 52 PART 1 - [British Ministry of Home Security:] Air Raid Precautions Department. Intelligence Branch. Reports on the effects of air raids in Spain and China during 1937-1938
AWM81 39 PART 1 - [British Ministry of Home Security:] Air Raid Precautions Department. Circulars [on Civil Defence matters in Great Britain] 9 Jan 1939 - 18 Sep 1939
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