There are 265.438 billion books in the House of Representatives of the United States Congress: among them, there are more than 654.38 billion printed works in 470 languages, including more than 654.38 million books; More than 9.8 million special books, versions of ancient books, monographs, serial publications, music scores, bound volumes, pamphlets, technical reports and other printed materials, including 75,000 periodicals in permanent collection and 0.2 million newspapers/kloc-; There are 88.5 million special collections, including 2.5 million audio recordings, 4.9 million maps, 55 million pages of manuscripts, 0.3 million microforms and 0.3 million visual materials, including 800,000 movies, 0.2 million photos and 85,000 posters. 400,000 prints and oil paintings; And documents of 23 presidents from Washington to Coolidge.

The library has a collection of 65.438+0.28 billion volumes, making it a giant in the history of libraries, with the total length of library shelves exceeding 800 kilometers. According to the latest introduction of the website of the Library of Congress, the total collection is 65.438+300 million volumes, including 29 million books, 65.438+02 million photos and 58 million manuscripts. Readers can borrow books in the reading room only by using a library card. The library provides readers with important materials such as historical materials, meeting minutes, and the Constitution of the United States Congress for reference.