The Library of Congress Linked Data Service (id.loc.gov) provides interactive and machine access to the Library's authority and bibliographic metadata, along with commonly-found standards and vocabularies used and/or maintained by the Library of Congress. Each controlled vocabulary list has a resolvable URI, as does each data value within it. Ontologies for several major data element sets are also available. This includes the LCSH (Library of Congress Subject Headings), the TGM (Thesaurus for Graphic Materials), preservation vocabularies, language and country codes, or the American Folklore Society Ethnographic Thesaurus (AFS Ethnographic Thesaurus) among others.

Prefix
loc.vocabulary
Keywords
registry
License
CC0-1.0
Links
Homepage Request Discussion Part of loc
Identifier Standards
Pattern for Local Unique Identifiers
Missing LUI pattern
Example Local Unique Identifier
demographicTerms   Resolve
Example CURIE
loc.vocabulary:demographicTerms
Contacts
Providers

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier demographicTerms is used to demonstrate the providers available for Library of Congress Vocabulary. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.

Provider Name Provider Code URI
Library of Congress Vocabulary loc.vocabulary http://id.loc.gov/vocabulary/demographicTerms
Bioregistry bioregistry https://bioregistry.io/loc.vocabulary:demographicTerms