【正文】
itain. To help rebuild the library, Congress bought the books of president Thomas Jefferson. Mr. Jefferson39。s collection included 7,000 books in seven languages. In 1897, the library moved into its own building across the street from the Capitol. Today, three buildings hold the library39。s collection. The library provides books and materials to the . Congress and also lends books to other American libraries, government agencies, and foreign libraries. It buys some of its books and gets others as gifts. It also gets materials through its copyright office. Anyone who wants copyright protection for a publication in the . must send two copies to the library. This means the Library of Congress receives almost everything that is published in the United States.