The Nation's Largest Libraries by Volumes Held
L = Library of Congress Annual Report, Fiscal Year 2017
A = Association of Research Libraries (ARL) Statistics, 2015-2016
P = Public Libraries Survey, FY 2016
Note: The Boston Public Library and New York Public Library function both as public libraries and as research libraries. Thus they appear on both the Public Libraries Survey and the ARL Statistics report, reporting their public library collection number in the former and their research library collection number in the latter. For accuracy in counting these institution's true holdings, these collection numbers have been added together.