Unheralded

JEFF OLSON: Photo Gallery — Library Of Congress

What’s the largest library in the world? If you guessed the Library of Congress, you would be right. As well as being the research library that officially serves the U.S. Congress, it is also the de facto national library of the country. The library’s collection is the home to millions of items, including books, recordings, photographs, maps and manuscripts. Alexandria, Va., photographer …