- Library of Congress Subject Headings Supplemental Vocabularies: Free-Floating Subdivisions, Genre/Form Headings, Children's Subject Headings
- Web-based subscription service
- Discontinued print publication.
All content now included with the Library of Congress Subject Headings found in Classification Web. See http://www.loc.gov/cds/classweb/
- Included in Classification Web
Introduction to Subject Heading Authority Control
Available in various formats, these tools help you with subject access. The major subject authority publications include Library of Congress Subject Headings, Classification Web, and Subject Headings Manual and updates. Many of the publications are available in Classification Web (http://www.loc.gov/cds/classweb) and in Cataloger's Desktop (http://www.loc.gov/cds/desktop).