Library of Congress

Cataloging Distribution Service

The Library of Congress > Cataloging Distribution Service > Classification Web

Search, browse, and access all Library of Congress Classification schedules and Library of Congress Subject Headings and Name Headings on the Web. Construct, verify, and assign classification numbers, subject headings, and name headings to library material using the most current data. Classification Web is the only web-based subscription service to offer you all this—and it’s updated every day. Now with a new interface that features clearer displays, less clutter, and expanded correlations.

Classification Web Plus Training (PDF, 772KB)

Free trial for 30 days

Some of the Classification Web advantages:

  • Full-text display of all LC Classification schedules, subject headings, and name headings.
  • All files updated daily
  • Search and navigate across all LC classes or the complete LC subject and name headings
  • Find LC/Dewey correlations quickly

See a full listing of the Classification Web features


CDS Customer Satisfaction Survey (CDS Survey). Please take this brief survey to help us better serve you.