Who's stealing Christopher Columbus letters from libraries around the world?

Copies of a letter written by Christopher Columbus describing his first impressions of the Americas have become so rare and valuable, they're being stolen and replaced with forgeries at some of the world's most prestigious libraries In 1492, Christopher Columbus, of course, sailed the ocean blue. And on his journey home, he wrote a letter to his patrons, King Ferdinand and Queen Isabella of Spain, describing his discovery of the new world, and in effect, asking for more money to make another trip. Columbus' voyage marked one of the great plot points in history. Upon his return, his letter was printed and distributed throughout Europe, making for blockbuster news. Columbus' original handwritten letter, penned on the high seas, no longer exists, but some of the printed copies do. Most are housed in prestigious libraries, and for centuries, that's where they've remained. That is, until about 10 years ago, when authorities discovered some of these treasures had been stolen and replaced with forgeries. So began a modern kind of trans-Atlantic quest, as investigators in the U.S. and Europe worked to recover Columbus' missing missives and solve this most unusual international mystery. -- More...