circular / a.r.p. department Civilian duty respirators fitted with microphone attachments / Home Office, Air raid precautions department air raid precautions memorandum Air raid wardens / issued by the Home Office (A.R.P. Department) air raid precautions memorandum Local communications and reporting of air raid damage / issued by the Home Office (A.R.P. Department) air raid precautions memorandum Notes on training and exercises / issued by the Home Office (A.R.P. Department) air raid precautions memorandum Care and repair of respirators / issued by the Ministery of Home Security (A.R.P. Department) Compulsory acquisition of land : A.R.P. England (compulsory purchase) : provisional regulations, 1939 Circulars and memoranda, including A.R.P. Department circulars and memoranda and A.R.P. Department (Grants) circulars in which reference is made to the auxiliary fire service : … Air raid precautions training manual / Ministry of Home Security. Air raid precautions department : Manual for officers responsible for A.R.P. training air raid precautions memorandum Rescue parties and clearance of debris / issued by the Home Office (A.R.P. Department) air raid precautions memorandum Protection of windows in commercial and industrial buildings / issued by the Ministery of Home Security (A.R.P. Department) a.r.p. department circular Civil defence act / Home Office, Air raid precautions department War time lighting restrictions for industrial and commercial premises / issued by the Home Office (A.R.P. Department)