About Library of Congress Authorities
Search and browse approximately:
- .5 million subject authority records
- 8.2 million name authority records (6 million
personal, 1.4 million corporate, 180,000 meeting, and 120,000 geographic
names, and .5 million titles)
Associated references and scope notes are also provided.
To search the Library's online catalog for bibliographic
and holdings information, please switch to http://catalog.loc.gov/
Library of Congress Authorities is available free
of charge. There are a number of known
problems with this initial release. The Library continues
to work with its integrated library system vendor to resolve
them and welcomes comments
and error reports via email.
This release does not include:
- Z39.50 functionality
- Full MARC 21 character set for display and download of authority
- Use of diacritics in searches
- Keyword searching of authority data
- Search access to form, genre, and topical subject subdivisions
Note: The Library of Congress is nearing
completion of a project to create authority records for all form,
genre, and topical subject subdivisions
About the Headings List Display
All initial search results are presented as a Headings
List--an alphabetical list of all headings found in the Library
of Congress Online Catalog that fall nearest alphabetically
to the first words of the search, whether the headings have authority
records associated with them or not.
Important! Authority records are available only for those
headings in the list that display with an icon in the leftmost column.
Note: Because the Library of Congress Online Catalog
includes millions of bibliographic records created over many
decades and according to a variety of cataloging policies,
the Headings List for a search may include many headings that
do not have associated authority records.
Examples include headings labelled "[from old catalog];"
name-title headings that under former cataloging practice
could be assigned as access points without an authority record;
headings consisting of established subject headings from the
Library of Congress Subject Headings (LCSH) combined
with free-floating subdivisions; and subject access points
established in a variety of other
thesauri but not in LCSH.
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