Includes civil defence publications, papers relating to wardens, ARP Emergency Committee agendas and minutes, Air Raid Precautions (ARP) correspondence, shelter files, instructions to civilians and papers regarding the welfare of citizens, fire service and fire prevention files, papers relating to the Women's Voluntary Service, papers regarding the billeting of workers, Ministry of Health files, papers regarding air raids and resultant war damage, papers regarding the Halifax bomber crash in York, staff registers, papers regarding training exercises, casualty lists, invasion committee papers, Operations Regional Comissioner correspondence, A.R.P Control Headquarters register of permits and papers relating to German chemical warfare explorations.