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The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 162 million items.
- Digital Collections
In 2021, after more than 10 years of operation, the Library...
- Visit
Visiting the Library. We’re excited to welcome you to the...
- Authorities
Includes subject, name, title and name/title authority...
- Blogs
The Library of Congress does not control the content posted....
- Library of Congress
The Library of Congress believes that many of the papers in...
- LC Catalog
Keyword (ALL) - Search Tips. Matches all word(s) entered in...
- Services & Programs
Learn how the Library of Congress collects, preserves &...
- Discover
Discover the Library of Congress. Search millions of items...
- Digital Collections
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.
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.
Jan 5, 2022 · The Library’s website (LOC.gov) provides open access to a wide variety of digital primary and secondary sources of interest to researchers of all ages. This guide provides links to these resources and search tools, as well as strategies for their use.
Advanced Search provides a guided search template that helps you combine keywords found anywhere in the record or in specific record areas (titles, names, subjects, notes, identifiers, publication information, etc.).
Keyword Search provides a single search box to find words and phrases anywhere in the LC Catalog record or in title, author/creator, or subject fields. Search results are returned by relevance. An Expert option is available from the Keyword Search menu for searchers who prefer command-driven queries.
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Query Builder. Command Line. Choose collections and fields from dropdown menus. Add more rows as needed. Search operators can be used when All Fields is selected. Use Action Codes and Legislative Subject Terms for more precise results. Reset.