data sources

Free library catalog records and metadata Library websites Library of Congress Catalog: https://catalog.loc.gov/ British Library Catalogue: https://www.bl.uk/catalogues-and-collections/catalogue New York Public Library Catalog: https://catalog.nypl.org/ Library and Archives Canada Catalog: https://www.bac-lac.gc.ca/eng/search/Pages/search.aspx Library APIs Library of Congress API: https://www.loc.gov/developers/ British Library APIs: https://www.bl.uk/bibliographic-data-services/apis-for-library-data Open Library API: https://openlibrary.org/developers/api WorldCat Discovery API: https://developer.oclc.org/apis/worldcat-discovery/ Open data repositories: Open Library: https://openlibrary.org/ HathiTrust Digital Library: https://www.hathitrust.org/ Digital Public Library of America: https://dp.la/ Online metadata aggregators: WorldCat: https://www.worldcat.org/ LibraryThing: https://www.