The library of Harvard University has the largest collection of books in the United States, and even the Library of Congress is candidly admit defeat. There are more than 6.5438+0.5 million books, 5.5 million micro-movies, 6.5 million manuscripts and 5 million research materials such as photos, maps and tapes. Even undergraduates can make use of these rich resources. Harvard's e-book collection system is very powerful, and students can view the electronic version of almost every academic journal.