◆ SpookStack

oe S -of' _ Late: LABORATORY 24 *. FEDERAL BUREAU OF INVESTIGATION WASHINGTON, D.C. 20535 yo. 075 To: ‘SAC, Milwaukee ~ we, From: Director, Federal Bureau of Investigation , UNSUB; THREAT ‘TO BOMB | | YourNo. i¢4=Hew y re FEDERAL BUILDING = 215 MONONA AVENUE a. = ccf a ayoLne: WISCONSIN — FBI rie 74-4201] j ~ BOMB THREAT bob. No, -D=730521098 OK Reference Airtel dated 5/17/73 | _ | | The material described below has been searched in the following file without effecting an identification: AnOnymous Letter File oe, an { Copies have been added to this file for future reference. being returned “a the fingerprint report. The submitted material is MATERIAL S$ UBMITTED: Ql Envelope bearing hand printed address “CLARK OF COURT, United STATeS DISTRICT, COURT, WesteRN DISTRICT OF WISCONSIN, MADISON, - WiSCONBIN, 53701." Q2 Sheet of ruled paper bearing hand printed message beginning, "Dear Sir... . . Q3 through Q5 Three sheets of blank ruled paper MAILER 23 ce UNIT i amin”