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all . Callahan FEDERAL BUREAU OF INVESTIGATION . Cleveland ___ COMMUNICATIONS SECTION ' NRO1@ MI PLAIN 6:15 PM URGENT p/16/73 LS K a Mr. P Mr, TO ACTINGDIRECTOR Me Orn is MI KAWSAS CITY (3b) ME oud i MILWAUKEE (174-NEW (PR) 3 Pages 6/873 \ pnt 0 | Herinaton Tele. Room . Baise . Conmy . Mintz . Eardley 215° jondha AVENUES UNSUB; THREAT TO BOMB FEDERAL BUILDING, MADISON, WISCONSIN, 5/21/73, JOSEPH W. “SKUPNIEWITZ - VICTIM, BOMB THREAT. ON 5/16 INSTANT, USA JOHN 0. OLSON, wWDu, FEDERAL BUILDING, MADISON, WISCONSIN, MADE AVAILABLE LETTER ADDRESSED TO CLERK OF COURT, U.S. DISTRICT COURT, |W, MADISON, WISCONSIN, 53701, DATED 5/14/73 WHICH STATED: "DEAR SIR THIS IS TO INFORMATION YOU, IF MY BroTHeR[ «IS NOT TURNED LOSE BY THE 5/21/7 THE ENTIRE FEDERAL BUILDING WILL BLOW/UP. THIS, 16 Ho JOKE. DOYLE AND HIS ENTIRE FA fur ore SA as YOU." SIGNED “FOR VICTORY," ENVELOPE ADDRESSED \ Ga cae COURT, WDW, MADISON, WISCONSIN\537061 AND CARRIED RETURN 174-Y¥201- 6X ® MAY 24 1973 ADDRESS NUMBER| _—«| P.O. BOX 1000, LEAVENWORTH, KANSAS wl 66948 OFFICAL BUSINESS. BACK SIDEOF ENVELOPE CARRIED END PAGE ONE (BY | 1973 - BaMyo ¢