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‘ . . ( ( 7 4 FEDERAL BUREAU OF INVESTIGATION ‘ “se UNITED STATES DEPARTMENT OF JUSTICE Loo gd § Laboratory Work Sheet nr + oe 1/3, mB Re: SRE: Infornmt File # Coded messages sent by Lad. # McLEAN and BURGESS @ LAB FILE Examination requested dy: ‘=agpeetnaap pan Memo Ladd from Date of reference communication: July 26, 1951 Date received: 7-30-51 Examination requested: Cryptanalysis - Result of Examination: os wd -6, ‘ Examination by: we , a~ - Specimens submitted for examination ~ Qs Strip of white paper bearing letters beginning "IHTAEADRTR ...%. Qc2 Message from Maclean to his wife beginning "Had to leave unexpectedly eee". Qc3 Message from Burgess to his mother beginning "terribly sorry for my silence ...". Qcl, Message from Maclean to his mother beginning "I am quite all right ...". Also submitted: Statement of MAAR 74