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FBI opened and photographed mail in secret 'Z-covers' 1958–66
New York Times sources describe FBI mail openings at New York and Washington and other cities from 1958 to 1966 to thwart espionage. The operations, unnamed "Z-covers," lacked search warrants and involved Post Office officials. FBI later said openings ended in 1966 under Hoover.
MENTIONED IN THIS ARTICLE
Yo Sjoun
Crewdson
New York Times
Washington
FBI
United States
New York
Cials
Post Office
Who
EBL
J. Edgar Hoover
Justice Department
CIA
Nick City
San Francisto