Library of Congress

Online Catalog

Library of Congress > Library Catalogs
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The LC Online Catalog will not be available from 5:00pm EDT, Friday, July 29 through 6:00pm EDT, Sunday, July 31 due to maintenance activities. We apologize for any inconvenience to our users.

Contains 18 million catalog records for books, serials, manuscripts, maps, music, recordings, images, and electronic resources in the Library of Congress collections. Search LC Authorities at

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Additional Catalogs & Research Tools

The LC Online Catalog is the main access point to the Library's collections. Click on the links below to use specialized catalogs and tools that provide access to additional LC resources: