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April 11, 1950 fiss Le icClasakey 201 W rat Street teneuas Zilli nots SOR 5 y icClastey: INDEXED , ‘ 4 , 4 s » INDEXED - 56 Your letter dated April 4, 1950, has been received and I want to thant you for furnishe ing me the data you related. I am taking the liberty of referring a of your communication to the Secretary of the 4ir Force, National Defense Butlding, The Pe gon, ashington 25, De Ce Sincerely yours, John Edgar Hoover Director 7 \ NOTE: Security Division, Esptonage Unity advised. — "Flying Saucer" data is being referred to the Air fOrtée et F ° NJC 30k ‘ToLson. Lada, chee, avin Nichols. Rosen,