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 D-Gerät A.R.S. 68b (tragbares U.S.-Gerät) manuel on explosives / A.R.J. Ramsey and H.C. Weston air raid precautions memorandum Gas detection and identification service / issued by the Ministery of Home Security (A.R.P. Department) 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)