There’s an old gold vault just outside of Washington, D.C., that holds the kind of (national) treasures most film nerds can only dream of seeing. But when a film screens in the Library of Congress’s theater, the filmmakers can get a tour of the Library’s vault. This is how “Hundreds of Beavers” producer Kurt Ravenwood ended up getting to see one of the original prints of Edwin Stanton Porter’s early silent Western, “The Great Train Robbery.”
Now, director Mike…