Library of Congress

Cataloging Distribution Service

The Library of Congress > Cataloging Distribution Service
Cataloging Distribution Service

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We publish and distribute many of the Library of Congress cataloging records and cataloging-related tools and resources. Whether you need web-based cataloging tools or cataloging records in various formats, the Cataloging Distribution Service (CDS) provides the most current and authoritative bibliographic resources produced by the Library of Congress.

Classification Web Plus

The only web-based subscription service that features the entire Library of Congress Classification and the complete Library of Congress Subject Headings and Name Headings. Updated daily. Free trial available.

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MARC Distribution Services

The premier source for Library of Congress bibliographic and authority records. Fourteen database services offered in hundreds of languages and distributed via FTP (file transfer protocol).
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Product Categories

See the range of products CDS packages and distributes as bibliographic databases and web-based subscription services for catalogers.
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CDS Price List

Download the 2024 Web Subscription Services and MARC Distribution Services Price List (PDF, 152KB)

Telephone Number Change

CDS's "toll-free in U.S." telephone number is now 1-855-266-1884.


Cataloger’s Desktop Subscription

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Classification Web Plus Training

Training Video (mp4, 9MB)

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Cataloging Distribution Service Announcement

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Learn How to Use Tables in Class Web

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MDS Technical Notices

Read the latest MARC Distribution Services technical notice.

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