Since Franklin Roosevelt, every modern U.S. president has opened his own presidential library. On Friday, President George Washington, the nation’s first, finally will get his turn, as a state-of-the-art presidential library is christened in his honor. Washington’s beloved Mount Vernon steps into a bold new era with the formal opening of The Fred W. Smith National Library for the Study of George Washington. Some 800 dignitaries, officials, and VIPs will be on hand to witness the unveiling of a library purpose-built to preserve the original books and papers from Gen. Washington’s personal collection. Noted historian and best-selling author David McCullough...