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— REPORT PG 9-23: i 2330 G of ia 4y eon aeonaeeht oa he FEBERAL BURES RU GE INVESTIGATION WASHINGTON, B. €. 262253 Te: «6 SAC, Pittsburgh (9-2350) Date: March 26, 1971 FBLFie No. 9-52035 ° fC Lab. No. D-7 10526031 -KYV a at er x & BOB THREAT Specinens received 3/26/71 Q10 Envelope postmarked "PITTSBURGH, PA 41 PIi 21 MAR 1971" bearing hand printed nane and address “PEREONAL ONLY TO FBI DIRECTOR J, ENG WOOVEK DEST OF JUETICE WACHINGTON U.C, LiuPORTANT" LAI Accompanying £iyst pace of a two-page handwritten pt lettcr beginning "Dear liv. Hoover:: In a story ..." Q12 Accompanying second pece of a tyvo-page hancwritten letter beginning "Lhese bomb explosives will tee signed orc of the 7-ladmen' Result of examination: The conclueion was reached that the writer of @lL and @12 also prepared the handwritten portions of Qi through CO previcusly received in this matter.