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VIAF: The Virtual International Authority File
VIAF (Virtual International Autority File) is an OCLC dataset and service -- built in cooperation with national libraries and other partners -- that virtually combines multiple... -
Library of Congress Subject Headings
LCSH has been actively maintained since 1898 to catalog materials held at the Library of Congress. By virtue of cooperative cataloging other libraries around the United States... -
LIBRIS
Swedish Union Catalogue. Swedish National Bibliography and authority data. The National Bibliography and authority data is part of Libris, the Swedish Union Catalogue, and the... -
National Agricultural Library Thesaurus
The NAL Thesaurus is an online vocabulary tool of agricultural terms in English and Spanish and is cooperatively produced by the National Agricultural Library, USDA and the... -
Open Library
About One web page for every book ever published. It's a lofty, but achievable, goal. To build it, we need hundreds of millions of book records, a brand new database...