WASHINGTON -- Alan Greenspan, the former Federal Reserve chairman, tops a long list of academics, executives and economists who met with the Fed's current chairman, Ben Bernanke, during a turbulent period for the nation's economy.

According to records obtained under a Freedom of Information Act request, Mr. Bernanke had lunch with Mr. Greenspan on Jan. 2. That was just eight days before Mr. Bernanke delivered a speech in Washington that signaled a newly aggressive approach to interest-rate cuts.

Neither the Fed nor Mr. Greenspan would elaborate on what was discussed. A Fed spokeswoman described the lunch that day as "social" and Mr. Greenspan said it was "private."

Last year, Mr. Bernanke's second in office, was a stressful one for the economy and -- by extension -- the Fed chief. Pressures from the housing slump and the subprime mortgage market spread to Wall Street, where big banks announced heavy mortgage-related losses. Mr. Bernanke's meetings offer a rare window into his private daybook from January 2007 through last month.

Mr. Bernanke met separately with the chief executive of Fannie Mae and Freddie Mac, the government-sponsored mortgage giants, and at least twice with former Senate Banking Committee Chairman Phil Gramm, now the vice chairman at UBS Investment Bank. On Sept. 5, he met with Lloyd Blankfein, chairman and chief executive officer of Goldman Sachs Group Inc., whose company weathered the credit-market turmoil better than some competitors.