(N.B. The grading of this jacket must be the same as that of the highest graded document contained in it. The appropriate upgrading slip must be affixed when ever necessary.) PART CONFIDENTIAL FOOD POISONING FOREIGN OFFICE TITLE: CLOSED UNTIL UNTIL REFER TO REFER TO NAME REFER TO NAME DEPT. NAME DATE File No. DATE DEPT. . DO NOT RETAIN FILES AND PAPERS UNNECESSARILY RETURN THEM TO REGISTRY FOR B.U. OR P.A. FILE FILE No. PART OPENED BO 19 (N.B. The grading of this jacket must be the same as that of the highest graded document contained in it. The appropriate upgrading slip must be affixed when ever necessary.) CONFIDENTIAL