Most federal libraries have a specific focus. LibrariesLibrary offerings Library of Congress (LOC) The world's largest library Provides unbiased research to Congress Home of the U.S. Copyright Office Federal depository librariesFederal information available for free public use in over 1,200 locations Federal Library and Information NetworkFind federal libraries around the world. National Agricultural LibraryOne of the world's largest collections devoted to agriculture and related sciences National Archives and Records Administration (NARA) Preserves documents with legal and historical value You can research your family history and military records National Library of Education (NLE)Locate education information, federal education policy, and statistics National Library of Medicine Part of the National Institutes of Health (NIH) World's largest biomedical library Develops ways to make biomedical information more accessible for research and health care National Library Service (NLS) for the Blind and Print Disabled A national network of libraries that loan recorded and braille books, magazines, and playback equipment For those who are blind or physically impaired and cannot use standard print materials National Transportation LibraryProvides access to transportation-related research, reports, data, and reference services Presidential librariesArchives and museums displaying documents and artifacts of a president and their administration