Most of us have noticed the Library of Congress number on the books we've bought and read. But just what is the Library of Congress? In a word -- HUGE!! In fact, it's the biggest library in the world.

The (partial) mission of the LOC is to preserve the knowledge and wisdom contained in the written word. It holds 16,000,000 books and 120,000,000 other artifacts, like movies, CDs and even ancient Chinese wood-block prints. That, my Faithful Readers, involved 823 miles of bookshelves! Imagine! It also employs 3,149 full-time people. For those of us who love the written word, this is paradise!

One can't help but wonder how many of those miles of shelves are devoted to bridge books. Hmmm.

Let's see if we can draw on the wisdom of the world to solve this quiz.