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Cataloging Distribution Service

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Cataloging Resources, Manuals and Training Tools
These resources, guides and manuals will help expedite your cataloging and make sure it is up to date, consistent, and accurate. Cataloger's Desktop includes all of the Library of Congress's cataloging manuals, standards and resources, as well as cooperative cataloging and international cataloging resources. Many of the manuals are now being converted into free downloads at http://www.loc.gov/aba/. Check that website frequently for newly added publications.

Classification
The complete Library of Congress Classification system is available by subscribing to the web-based service, Classification Web. While inventory lasts, it is also available in 41 individually printed classification schedules. Over the next year, all of the classification schedules will be converted into free downloads at http://www.loc.gov/aba/. Check that website frequently for newly added schedules.

MARC Distribution Services (databases)
Library of Congress cataloging records are available via FTP (File Transfer Protocol) delivery. Records are for materials in hundreds of languages, including non-roman alphabets in original scripts. MDS provides national level cataloging for almost all English-language imprints.

MARC Documentation
Machine-Readable Cataloging (MARC) is the standard in library automation, forming the backbone of today's automated library systems, networks, and bibliographical utilities. The Library of Congress MARC products set the standard for MARC cataloging documentation. Available in Cataloger's Desktop and free online on the Library's MARC web site, http://www.loc.gov/marc/.

Products with Free Downloads
As a service to the library community, free downloads of selected Library of Congress cataloging publications are available directly from the CDS website. Over the next year they will be transferred to http://www.loc.gov/aba/. Check that website frequently for newly added publications.

Subject Heading Authority Control
Available in various formats, these tools help you with subject access. The major subject authority publications include the six-volume Library of Congress Subject Headings, Classification Web, and Subject Headings Manual and updates. Many of the publications are available in Cataloger's Desktop. Many of these resources are now being converted into free downloads at http://www.loc.gov/aba/. Check that website frequently for newly added publications.