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fll KI le} DIRECTOR, FBI 8 61 ; (att: FBI Laboratory) Wh C, NEW YORK EXAMINATION SCHOOL WYO 8/3/61 I have been informed by Agents of the NYO. who school on 8/3/61 conducted by of the Burean Laboratory, in the latest deve lopm cunent @xamination, that the techniques discussed by nave proved very valunble {n the hand ential sources of the NYO. These Agents have atated that the instruction they received has helped decrease the area of risk considerably in the handling of these highly confidential sources. We are most reciative of the excellent inst: .-7t afforded by and appreciate the Bureau's oakwy, his services avatlable to us. 3 - BUREAU RM - (1 = FBY Laboratory) COL NBC oR pee - searched 5 Serialized» th) Indexe$ =" Filed | ae ALL INFORMATION CONTAINED Sac HEREIN IS UNCLASSIFIED .