William F. Friedman NSA Archive - Correspondence Concerning the Demise of Yardley's American Black Chamber, 1950 - 4in1

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Files W.F.F. Archive Correspondence, Memoranda, and Personnel File Records Correspondence Concerning the Demise of Yardley's American Black Chamber, 1950

Note to Dr. Sanford from Lt. Pearson Citing Mr. Manson's Apology to Friedman

Document A99891