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PG: 9-2330 ‘DETAILS: | : Investigation in this matter was predicated upon receipt of handwritten letters directed to the U.S. Supreme Court, the Chief Justice of the U. S. Supreme Court, and Director J. EDGAR HOOVER of the Federal Bureau. of Investigation, Washington, D. C. The following undated letter. was directed to the Chief Justice of the U. S. Supreme Court, Washington, De C., in an. envelope postmarked’ Pittsburgh, ’Pa., ; November 23, 1970, and bearing the return address, "North Anericai Insurance Institute, Pittsburgh, Pa,2'