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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. Standard numbers can help you retrieve specific records from the LC Catalog.
Browse provides a single search box for finding words and phrases in titles, authors/creators, subjects, call numbers, and standard numbers and arranging the results in an ordered alphabetic or numeric list. The Browse shortcut URL is: https://catalog.loc.gov/browse.
Use index codes to specify where words should be searched in the record: KSFG western finds western in a form/genre heading. Use a percent sign ( % ) as a single-character wildcard, either inside or at the end of a search word: wom%nNote: if your search terms contain a percent sign, remove the %. Enter "100% solution" as "100 solution".
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. The collections include books, sound recordings, motion pictures, photographs, maps, and manuscripts.
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.
Advanced Search Tips. Enter your search term(s) in the Search box(es): . Capitalization does not matter: Florida and florida will retrieve the same records. Use a percent sign ( %) as a single-character wildcard, either inside or at the end of a search word: wom%n.Note: If your search term contains a percent sign, remove the %: 10% happier (for 10 happier).
Outline of the Library of Congress Classification (Cataloging Policy and Support Office)
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. Standard numbers can help you retrieve specific records from the LC Catalog.
Call numbers include both LC class numbers and other Library shelving numbers. Enter either a complete call number or the first part of the number: TX652.5 (include period) Enter spacing and punctuation accurately: TX725.M35 C56 (include period and space) The LC classification assigned to a work is related to the subject of the work.
Scope of the Catalog. Library of Congress collections contain over 175 million books, periodicals, manuscripts, maps, music, recordings, images, and electronic resources. The LC Catalog contains over 20 million records describing these collections. You can search catalog records by keyword or browse by authors/creators, subjects, names/titles ...
