Loc.gov JSON API - provides data about Library of Congress digital collections. The API is a work in progress and subject to change.
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 such as bills, amendments and committee reports.
Chronicling America APIs - over 12 million (and growing) digitized historic newspaper pages from almost every U.S. state and territory.
American Archive of Public Broadcasting APIs External tens of thousands of historic public radio and television programs are available for streaming and more content is added periodically. In addition, the website provides data records for approximately 2.5 million items inventoried by public broadcasting stations for this project. Further, scholars may request access to JSON and text transcripts for items in the AAPB's Online Reading Room through the AAPB Transcripts Research Access service. Credentials are required to access the transcripts API and can be obtained by contacting aapb_notifications@wgbh.org. Contact AAPB for more information about accessing the collection for digital humanities/research projects.
MARC records - bibliographic information for most of the Library’s collections. 25 million records are available for exploration in UTF-8, MARC8, and XML formats.
