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NSA releases 52,000 pages of William F. Friedman Collection,
searchable:<br><br>
<a href="https://www.nsa.gov/public_info/declass/friedman_documents/index.shtml">
https://www.nsa.gov/public_info/declass/friedman_documents/index.shtml</a>
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Document index spreadsheet:<br><br>
<a href="https://www.nsa.gov/public_info/_files/friedmanDocuments/Friedman_Collection_Metadata.xlsx">
https://www.nsa.gov/public_info/_files/friedmanDocuments/Friedman_Collection_Metadata.xlsx</a>
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