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= Ce DETAILS: * I, BACKGROUND” ‘\ ; 9 * Residence and Employment |. a es a” By means of a pretext telephone call made by a Special Agent of the Federa reau of Investigation to MAin 4-2929, listed to W. Lys DU BOIS, 31 Grace Court, Brooklyn, New York, on Marth 10, 1958, it was determined that Dr. DU BOIS then resided at that address and was self- employed as an author and lecturer. It was further deter- ‘mined that he had recently celebrated his 90th birthday and Wao evils paintaining a busy schedule of lecturing and writing] ma rc te