List of the largest libraries in the United States
The largest public library in the United States—and the largest library in the world—is the Library of Congress in Washington, D.C., which is the "de facto" national library of the United States. It holds more than 167 million items, including "more than 39 million books and other printed materials, 3.6 million recordings, 14.8 million photographs, 5.5 million maps, 8.1 million pieces of sheet music and 72 million manuscripts." Other than the Library of Congress, the largest public library in the United States is the New York Public Library, while the largest research library in the United States is the Harvard Library.
Chicago Public Library
The American Library Association reports that the library holds 5,721,334 volumes, making it the 9th largest public library in the United States by volumes held, and the 30th largest academic or public library in the United States by volumes held. The Chicago Public Library is the second largest library system in Chicago by volumes held (the largest is the University of Chicago Library). The library is the second largest public library system in the Midwest, after the Detroit Public Library.