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oe nba 2 AR ae To4 (Rev. 11-26-74) REPORT & Ba . 1 - Mr. Oberg inik.. LABORATORY a. FEDERAL BUREAU OF INVESTIGATION WASHINGTON, D.C. 20535 To: ADIC, Los Angeles (9~5949) November 3, 1976 Bee $25 chat Nsom FBI FILE NO, Lap.yo, 27780928009 IK Re: UNSUB; . PRANK SINATRA - VICTIM; YOUR NO. EXTORTION co: Los Angeles S \ \ Reference Airtel $/21/ The material described below has been searched in the following file without effecting an identificationAanonymous Letter Pile i ‘ Shas fae Pabucn eafnenn ae The submitted material is temporarily retained, MATERIAL SUBMITTED: we Ql Envelope postmarked “CHICAGO, IL 606 PM 20 AUG 1976" bearing the typewritten address “Ceoasar's Palalce Strip on the Las Vegas, Nev." . Q2 Accompanying typewritten note beginning as MAILED 4 udge Markoviz and Korshak ...* NOV 03 1976 | i FBI \ l - Bufile (9-61979) } Page 1 \) c VWSO:rma (5)* _ 3 Yio * ivaul r ? + ~ * _MAIL ROOM wa TELETYPE UNIT [—]