2007 marks the 500th anniversary of the publication of the first known map to use the word “America” for the western hemisphere. The only known copy of the map was acquired by the U.S. Library of Congress in 2003 for $10 million. The map has been called "America's birth certificate" and was compiled by cartographer Martin Waldseemüller in 1507.
The map is the earliest multi-sheet printed wall map, made up of 12 sheets, each measuring 16-1/2 inches by 23-1/4 inches, resulting in an overall map that measures 4-1/2 feet by 8 feet, or a total of 36 square feet. The image below is a composite of the 12 sheets.