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Catalog FAQs

I do not see an item for the serial record that I think the Library has. How do I check?
Last Updated: Jun 28, 2025 |
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What are holdings? Can you explain the information and how to navigate it?
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How do I understand the holdings summary statements?
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Once I've found materials in the catalog, where do I go to see them?
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What's a call number and how do I use it?
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Does the online catalog list every item in the Library's collections?
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Help Guides

Catalog Help and Documentation

On Monday, June 30, 2025, the Library of Congress will launch its new catalog. The catalog is the main access point for the Library's collections.

Catalog Migration: Info for Researchers

How to plan for your visit during migration.

Other Useful Resources

Library of Congress Name Authorities

Resources for Cataloging

Electronic Resources Online Catalog

Using the Library & Research Centers