Selected Libraries or Services Worldwide
- ArchivesUSA
- Bibliotheque nationale de France
- British Library and the British Library Public Catalogue
- Center for Research Libraries (CRL)
- French Studies Web: Universities, Libraries, and Archives
- Gabriel: Gateway to Europe's National Libraries
- German Studies Web: Library Catalogs and Other Library Information
- Historical Research in Europe: A Guide to Archives and Libraries
- Libdex: the Library Index
- Library of Congress
- Libweb: List of Library World Wide Web Servers (from Berkeley Digital Library SunSITE)
- National Library Catalogues Worldwide (John W. East, University of Queensland Library)
- National Library of Canada
- RedLightGreen (from RLG)
- Repositories of Primary Sources
- Scandinavian Studies Web: Libraries and Information Services
- UK National Register of Archives
- UNESCO Archives Portal
- WorldCat (OCLC Catalog)