Additional APIs and Data Services

In addition to the loc.gov API, there are other APIs and machine-readable data services maintained by the Library separately from the loc.gov API, including APIs for Chronicling America and the Prints and Photographs Online Catalog, as well as data services for authority, bibliographic, and catalog data.

  • Congress.gov API The Congress.gov Application Programming Interface (API) provides a method for Congress and the public to view, retrieve, and re-use machine-readable data from collections available on Congress.gov.
  • NLS BARD API An API for the BARD service of the National Library Service for the Blind and Print Disabled.
  • Chronicling America API An API for Chronicling America
  • PPOC - JSON HTTP API An API for the Prints and Photographs Online Catalog
  • Linked Data Service A Linked Data Service for Authority and Bibliographic Metadata
  • Search/Retrieval via URL Search/Retrieval via URL (SRU) servers, including the Z39.50 gateway to the Library catalog.