Library of Congress Issues API

openapi: 3.1.0
info:
  title: Library of Congress Chronicling America Bills Issues 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: Issues
paths:
  /lccn/{lccn}/{date}/ed-{edition}.json:
    get:
      operationId: getIssue
      summary: Get Issue
      description: Retrieve metadata for a single issue of a newspaper.
      tags:
      - Issues
      parameters:
      - name: lccn
        in: path
        required: true
        schema:
          type: string
      - name: date
        in: path
        required: true
        description: Issue date in YYYY-MM-DD format.
        schema:
          type: string
      - name: edition
        in: path
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: Issue metadata
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Issue'
components:
  schemas:
    Issue:
      type: object
      properties:
        date_issued:
          type: string
        edition:
          type: integer
        title:
          type: object
        pages:
          type: array
          items:
            $ref: '#/components/schemas/Page'
    Page:
      type: object
      properties:
        id:
          type: string
        url:
          type: string
          format: uri
        title:
          type: string
        date:
          type: string
        sequence:
          type: integer
        ocr_eng:
          type: string