Includes details of visits to MS's anti-aircraft battery by CSC and Winston Churchill, reminiscences of CSC's visits to shelters and a copy of a letter from CSC to Churchill on the work of MS's battery, June 1944.

Subjects include: shipbuilding figures; wireless policy; squadrons abroad for trade protection; totals of ships sunk by German submarines and losses among German and Turkish submarines; the speed and armaments of German submarines; the need to simplify correspondence between the Admiralty and the dockyards; possible zeppelin attacks on London; steady pressure strategy.

Includes: Ministry of Home Security papers on design of air raid shelters; Home Office Civil Defence Research Committee minutes; Department of Scientific and Industrial Research papers on alternative construction methods; papers on bombing trials for shelters and on protection for factories and offices; road research reports; data on damage to reinforced concrete and steel framed buildings; report on damage at Hiroshima and Nagasaki [Japan].