Library of Congress

aid: library-of-congress
name: Library of Congress
description: >-
  The Library of Congress is the largest library in the world, with millions of books, films and video, audio
  recordings, photographs, newspapers, maps and manuscripts in its collections. The Library is the main research arm of
  the U.S. Congress and the home of the U.S. Copyright Office. The Library publishes a suite of public APIs that expose
  its catalog, digital collections, historic newspapers, and legislative information.
type: Index
position: Producer
access: Public
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
  - Cultural Heritage
  - Federal Government
  - Library
  - Legislative
  - Newspapers
  - Search
created: '2024-01-01'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/library-of-congress/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
  - aid: library-of-congress:loc-gov-json-api
    name: Library of Congress loc.gov JSON API
    description: >-
      The loc.gov JSON API returns structured JSON or YAML representations of the Library of Congress's online
      collections, items, search results, and resource pages, enabling programmatic access to digital collections
      metadata and content.
    humanURL: https://www.loc.gov/apis/json-and-yaml/
    baseURL: https://www.loc.gov
    tags:
      - Collections
      - Library
      - Metadata
      - Search
    properties:
      - type: Documentation
        url: https://www.loc.gov/apis/json-and-yaml/
      - type: Reference
        url: https://www.loc.gov/apis/json-and-yaml/requests/
      - type: OpenAPI
        url: openapi/library-of-congress-loc-gov-json-api-openapi.yml
  - aid: library-of-congress:chronicling-america-api
    name: Library of Congress Chronicling America API
    description: >-
      The Chronicling America API exposes historic American newspapers digitized through the National Digital Newspaper
      Program, providing search and metadata access to newspaper pages, issues, and titles.
    humanURL: https://chroniclingamerica.loc.gov/about/api/
    baseURL: https://chroniclingamerica.loc.gov
    tags:
      - Historic
      - Library
      - Newspapers
      - Search
    properties:
      - type: Documentation
        url: https://chroniclingamerica.loc.gov/about/api/
      - type: OpenAPI
        url: openapi/library-of-congress-chronicling-america-api-openapi.yml
  - aid: library-of-congress:congress-gov-api
    name: Library of Congress Congress.gov API
    description: >-
      The Congress.gov API provides programmatic access to legislative information, including bills, laws, members,
      committees, and Congressional Record content from the U.S. Congress.
    humanURL: https://api.congress.gov/
    baseURL: https://api.congress.gov/v3
    tags:
      - Bills
      - Congress
      - Legislative
      - Members
    properties:
      - type: Documentation
        url: https://github.com/LibraryOfCongress/api.congress.gov/
      - type: SignUp
        url: https://api.congress.gov/sign-up/
      - type: OpenAPI
        url: openapi/library-of-congress-congress-gov-api-openapi.yml
common:
  - type: LinkedIn
    url: https://www.linkedin.com/company/library-of-congress
  - type: Website
    url: https://www.loc.gov/
  - type: Documentation
    url: https://www.loc.gov/apis/
  - type: Reference
    url: https://www.loc.gov/apis/json-and-yaml-responses/
  - type: GitHubOrganization
    url: https://github.com/LibraryOfCongress
  - type: Integrations
    url: https://www.loc.gov/apps
integrations:
  - name: Facebook
  - name: Copy Link
  - name: Library of Congress Facebook
  - name: Library of Congress X
  - name: Library of Congress YouTube
  - name: Library of Congress Pinterest
  - name: Library of Congress Flickr
  - name: Library of Congress Instagram
  - name: Library of Congress iTunesU
  - name: Library of Congress LinkedIn
  - name: Email
  - name: Congress.gov
  - name: United States Copyright Office
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com