The Library of Congress will announce today that it is to be the beneficiary of a major gift from Florida real estate mogul Jay Kislak, which includes a $4 million map of the New World dating from the 16th century, as well as 4,000 other early American artifacts. The map, known as the Carta Marina, is a matching piece to another similar map purchased by the library last year. “Items in the collection date back as far as 1200 B.C. and primarily involve what is now the southeastern United States, the Caribbean and Mesoamerica.” No official monetary estimate of the value of the donation has been released, but Kislak’s complete personal collection has been assessed at over $100 million.