Library of Congress

Library of Congress Collections API

The Collections API from Library of Congress — 2 operation(s) for collections.

GitHub OpenAPI

Documentation

📖
Documentation
https://www.loc.gov/apis/json-and-yaml/
📖
Documentation
https://chroniclingamerica.loc.gov/about/api/
📖
Documentation
https://github.com/LibraryOfCongress/api.congress.gov/

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/library-of-congress/refs/heads/main/openapi/library-of-congress-collections-api-openapi.yml

Other Resources

🔗
Reference
https://www.loc.gov/apis/json-and-yaml/requests/
🔗
Signup
https://api.congress.gov/sign-up/

OpenAPI Specification

library-of-congress-collections-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Library of Congress Chronicling America Bills Collections 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.
  version: 1.0.0
  contact:
    name: Library of Congress
    url: https://chroniclingamerica.loc.gov/about/api/
servers:
- url: https://chroniclingamerica.loc.gov
  description: Production
tags:
- name: Collections
paths:
  /collections/:
    get:
      operationId: listCollections
      summary: List Collections
      description: List the Library's digital collections.
      tags:
      - Collections
      parameters:
      - name: fo
        in: query
        schema:
          type: string
          default: json
      responses:
        '200':
          description: Collections list
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CollectionList'
  /collections/{name}/:
    get:
      operationId: getCollection
      summary: Get Collection
      description: Retrieve metadata and items for a specific collection.
      tags:
      - Collections
      parameters:
      - name: name
        in: path
        required: true
        description: Collection slug.
        schema:
          type: string
      - name: fo
        in: query
        schema:
          type: string
          default: json
      responses:
        '200':
          description: Collection details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Collection'
components:
  schemas:
    Collection:
      type: object
      properties:
        id:
          type: string
        title:
          type: string
        description:
          type: string
        url:
          type: string
          format: uri
        item_count:
          type: integer
    CollectionList:
      type: object
      properties:
        results:
          type: array
          items:
            $ref: '#/components/schemas/Collection'