One hundred years ago this year, on Dec. 17, two brothers from Dayton, Ohio Orville and Wilbur Wright, made the worlds first powered, sustained and controlled flight in their heavier-than-air flying machine. To celebrate the centennial of flight, the Library has mounted a special display as part of its American Treasures exhibition. The Dream of Flight, which includes the diary of Orville Wright, will be on view in the Librarys Jefferson Building until April 24, 2004. But if you cant come to Washington, you can view the exhibition online at www.loc.gov/exhibits. There youll see Orville Wrights diary, including the Dec. 17 entry.