The Capitol Visitor Center’s new exhibit, "Congress Investigates," showcases Congress' investigatory powers. Baby boomers will be especially interested in items from the Watergate investigation. Visitors will be able to see the address book belonging to Watergate burglar Bernard Barker - his entry of a White House phone number for "HH" was a critical piece of evidence that linked the break-in to President Richard Nixon's re-election committee. Other investigations highlighted include the Pecora investigation of the 1929 stock market crash; an investigation in the 1950s into the relationship between comic books and juvenile delinquency; and the investigation into the 1912 Titanic disaster. Exhibition Hall is open Monday through Saturday, 8:30 a.m. to 4:30 p.m. No reservations or passes are needed to visit Exhibition Hall, which is located on the lower level of the Visitor Center, behind the plaster model for the Statue of Freedom.