Library of Congress

Cataloging Distribution Service

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Cataloging Distribution Service

We publish and distribute all of the Library of Congress cataloging records and cataloging-related publications, 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.

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In the event of a Government shutdown, the Library of Congress will be temporarily closed beginning Tuesday, October 1, until further notice. During this period, the Library will be unable to respond to any communications received. Classification Web and Cataloger's Desktop will continue to be available, but should any technical difficulties arise during the closure no customer service or technical support can be provided. We will be unable to process orders for print products. We apologize for the inconvenience.

MARC Distribution Services (MDS) will continue to be available, but subscribers can expect fewer records than normal on the daily and weekly distribution files. Depending on the length of the shutdown, null files or a disruption in service might be possible. Should any technical difficulties arise during the closure no customer service or technical support can be provided. We apologize for the inconvenience.

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Classification Web

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.

Read more about Classification Web

Cataloger's Desktop

More than 300 of the most important cataloging and metadata resources—available 24-7. Web-based subscription service. Free trial available.
Read more about Cataloger's Desktop

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).
Read more about MARC Distribution Services

Product Categories

On one web page, see the range of products CDS packages and distributes: bibliographic databases, web-based subscription services for catalogers, cataloging-related print publications, and free downloads of selected publications.
Read more about all of our products

CDS Price Lists

1) Download the Print Product Price List
2) Download the Web Subscription Services & MARC Distribution Services Price List

Telephone Number Change

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

LATEST EDITIONS, ISSUES & NEWS:

Subject Headings Manual, Update No. 2, 2013 available now!

Order your copies today

Library of Congress Transitions to Free, Online-Only Cataloging Publications

Read the press release

Get the Most From RDA - in Cataloger's Desktop

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Learn How to Use Tables in Class Web

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Cataloger's Desktop Credit Card Payment Option When Renewing Your Subscription

Class Web Credit Card Payment Option

Check Policy When Ordering from CDS

Print Product Update

News about changes in content delivery for selected print publications.

MDS Technical Notices

Read the latest MARC Distribution Services technical notice.

CDS Customer Satisfaction Survey (CDS Survey).

Please take this brief survey to help us serve you better.