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KC 174-1558 ENCLOSURES : TO U. S. ATTORNEY, KANSAS CITY, KANSAS One copy each of memorandum by FBI Milwaukee, Wisconsin, dated May 22, 1973, entitled "Unknown Subject; Threat to Bomb Federal Building, 215 Monona Avenue, Madison, Wisconsin; Joseph W. Skupniewitz ~ Victim, May 21, 1973" < and Milwaukee memorandum dated May 30, 1973, entitled "Ronald Dean Kessenich; Bomb Threats; Congressional Assassination Statute - Extortion." DETAILS: . On May 16, 1973, U. S. Attorney JOHN 0. OLSON, Western District of Wisconsin (WDW), Federal Building, Madison, Wisconsin, made available a letter addressed to Clerk of Court, U. "§. District Court, WDW, Madison, Wisconsin, $3701, dated May 14, 1973, which stated .as follows: "Dear Sir this is to information you, if my brother[ —_is not turned Iose by the 5/21/73 the entire federal building will blow up. This is no joke. Doyle and his entire family will die as well as you." The letter was signed "For victory." * The envelope was addressed to Clerk of Court, U. Ss. ‘District Court, WDW, Madison, Wisconsin 53701 and carried return address number[ __] P. 0. Box 1000, Leavenworth, Kansas 66048, official business. The back side of envelope carried property stamp of P.O. Box 1109, Leavenworth, Kansas, and with property stamp dated May 14, 1973, that letter was processed through special mailing procedures and to the effect that if the writer raises any question or problem over which this facility has jurisdiction, material may be returned. If the writer enclosed correspondence for forwarding, t this also should be returned. : Mr. OLSON advised that on May 21, 1973, approximately 500 _persons will be in the Federal building involving ‘various court appearances,