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FD-302 (REY. 11-27-70} ; : . ‘ ; FEDERAL BUREAU OF INVESTIGATION ¥ 1 l= | Date of lranscriptian 3 L7 77 ; . . . On March 15, 1977, slo the Laboratory Division, FBI Headquarters, Washington D.C., telephonically advised the Baltimore Office of the FBI that the handwriting on the envelope ‘postmarked March 5, 1976 addressed to Mrs. MARTIN L. KING, JR., 234 Sunset Ave. N.W., Atlanta, GA., was disguised handwriting and that after comparing the handwritin e known | handwriting of no conclusion could be reached concerning the atifhorship of the envelope. a te b6 bIC Inlerviewed on 3; 15/ 77 ar Baltimore, Maryland File # G~ 7403 by ; SA & Dale diciated__ 3 16/ r, ? . .» This document contains naither recommendations nor conclusions of the. FRI, iti the property of the FBI ond is loaned to your ugency; # and it contents ora nat to be distributed aulside your agency.