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.
Catalogs & Finding Aids
Use the online catalog to search the Library's collections by keyword or browse materials by subject, title, author & more. While much of our content is available in digital format, a majority of the collections have not yet been digitized. Use finding aids to discover the rich content within our thousands of unique collections.
Research & Reference
Interact with knowledgeable librarians & subject specialists -- online and in our reading rooms in Washington, D.C. Go beyond the digital collections.
Volunteer online with By the People to uncover our shared history. Transcribe, review & tag digitized material to make documents more searchable for everyone.