W. Mark Felt , the former No. 2 official at the Federal Bureau of Investigation who revealed himself on Tuesday as The Washington Post 's secret source on the Watergate scandal , usually fell low on the list of suspects , if he was there at all , in scores of books and articles speculating on the subject .
W. Mark Felt /business/person/company Federal Bureau of Investigation
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W. Mark Felt
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Federal Bureau of Investigation
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/business/person/company