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C : UNITED S° TES ATOMIC ENERGY ‘OMMISSION IN REPLY REFER 10 WASHINGTON 5,0. ¢. SY: CAP Honoreble J. Edgar Hoover, Director Federal Bureau of Investigation U. SS. Department of Justice Washington, D. C. t dy 1 OA : ahd sian ; / int A J Attention: : O / . ee f aot | “ _ — é Jf Subject : DONALD DUART’ MACLEAN i$ 7 \ Dear Mr. Hoover: Vy - Reference ie made to summary of informaticn dated June 12, 195] concerning MacLean and G. F. de v4 Burgcse, and our reply of July 1C, 195] furnishing an evaluation of the possi- ble damage caused by MacLean as a result of hie activities. A pb eee ret . We will appreciate receiving any further information which you may be able to furnish concerning MacLean, Tee tte rie te ra Sincerely yours, ‘| Va —_— fi J. cA. Waters ros ‘Director ioe (i: Division of Security rare ; eerie ta aR seater ee ed, sree