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Explore the world's largest library online or in person, with historic collections, exhibitions, events and programs. Learn about the Library of Congress, its history, mission and services.
Discover the Library of Congress. Search millions of items in many formats and languages. Explore a growing treasury of digitized materials. Consult with staff online or in one of the research centers to find what you're looking for.
- Office of The Librarian
- Congressional Research Service
- Copyright Office
- Law Library
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The Office of the Librarian is the administrative branch of the Library of Congress and has overall management responsibility for the Library. It sets policy and directs and supports programs and activities to accomplish the Library’s mission.
CRSexclusively serves Congress by providing confidential, objective and authoritative research and analysis to help inform the legislative debate.
The U.S. Copyright Officeadministers the Nation’s copyright laws for the advancement of the public good, offers services and support to authors and users of creative works, and provides expert impartial assistance to Congress, the courts and executive branch agencies on questions of copyright law and policy.
Congress established its Law Libraryin 1832, recognizing its need for ready access to reliable legal materials. The Law Library has grown over the years to become the world’s largest law library, with a collection of over three million volumes spanning the ages and covering virtually every jurisdiction in the world.
Learn about the mission, organization and services of the largest library in the world, which serves as the research arm of the U.S. Congress and the home of the U.S. Copyright Office. Explore the Library's collections, access online resources and visit its facilities in Washington, D.C.
Learn how to plan your visit to the Library of Congress, the largest library in the world. Find out about hours, tickets, exhibitions, reading rooms, shopping and more.
Searches for Library of Congress Control Numbers (LCCN), International Standard Book Numbers (ISBN), and International Standard Serial Numbers (ISSN). Numbers must be entered in exact order beginning with the first character.
Explore the Library of Congress's vast and diverse collections of books, journals, newspapers, manuscripts, maps, photographs, and more. Find research guides, digital collections, databases, and services for on-site and remote access.
Learn about the history, buildings, collections and services of the Library of Congress, the largest library in the world. Find out how to visit, access and use its digital and physical resources.
