The only known copy of the 1507 world map by Martin Waldseemüller, the first map to use the name "America," spent nearly 400 years in obscurity in the library of a castle in southern Germany. Rediscovered in 1901 and purchased by the Library of Congress in 2003, this crown jewel of cartography will be secured in a state-of-the-art encasement and placed on permanent display later this year.