West European Library Catalogs

• Center for Research Libraries
• LibDex - Worldwide directory of library catalogs
• Karlsruhe Virtual Catalogue - Access to books and serials in library and book trade catalogs worldwide
• European Library - Portal for 43 national libraries of Europe
• Gesamtkatalog der Wiegendrucke
• VD16 -- Verzeichnis der im deutschen Sprachraum erschienenen Drucke des 16. Jahrhunderts
• VD17 -- Verzeichnis der im deutschen Sprachraum erschienenen Drucke des 17. Jahrhunderts

• Österreichische Nationalbibliothek - Austrian National Library
• Österreichischer Bibliothekenverbund: Gesamtkatalog
• Bibliotheken Online
• Austrian libraries

• KBR: Koninklijke Bibliotheek van België - Royal Library of Belgium
• Koninklijke Bibliotheek - National Library of the Netherlands
• Bibliothèque nationale de Luxembourg - National Library of Luxembourg
• Archives de L'Etat en Belgique

• Bibliothèque nationale de France - French National Library
• Le Centre Historique des Archives Nationales (CHAN)
• Catalogue Collectif de France

• DNB: Deutsche Nationalbibliothek - German National Library
• Die Deutsche Bibliothek
• Bayerische Staatsbibliothek
• Bibliothekskataloge
• OPAC der Zeitschriftendatenbank
• Deutsche Bibliotheken Online

• Ethnike Bibliotheke tes Hellados - National Library of Greece
• European Public Law Library
• Music Library of Greece

• BNE: Biblioteca Nacional de España - National Library of Spain
• Biblioteca Nacional de Portugal - National Library of Portugal
• Biblioteca de Catalunya
• Biblioteca de la Universidad Complutense de Madrid
• Archivo General del Ministerio de Educación y Cultura
• Catálogos de las bibliotecas públicas en España
• Libraries on the Web: Spain From the Berkeley Digital Library
• Centro de Documentacion Musical de Andalucia
• Biblioteca de la Escuela de Estudios Hispano-Americanos

• Leabharlann Náisiúnta na hÉireann - National Library of Ireland
• Law Library of Ireland
• Research library catalogs in Ireland (IRIS)
• COPAC - a merged online catalog of 24 university research libraries in the UK and Ireland

• Biblioteca Nazionale Centrale di Firenze - National Central Library of Florence
• Biblioteca Nazionale Centrale di Roma - National Central Library of Rome
• Biblioteche SBN - Italian National Bibliography
• Italian Periodicals Catalogue (ACNP)
• AIB. Italian Library Catalogs
• Archivio Centrale dello Stato
• Direzione Generale per i Beni Librari e gli Istituti
• Istituto Centrale per il Catalogo Unico delle Biblioteche Italiane e per le Informazioni Bibliografiche
• Archivio Segreto Vaticano
• Libraries on the Web: Italy - From the Berkeley Digital Library
• A Guide to European Archives: Italy
• Fondazione Archivio Diaristico Nazionale
• Biblioteca e Raccolta Teatrale del Burcardo
• Archivi in Rete (Firenze)
• Biblioteca Provinciale "T. Stigliani" di Matera
• Università degli Studi di Roma "La Sapienza"

• Kungl. biblioteket, Sveriges nationalbibliotek - National Library of Sweden
• Nasjonalbiblioteket - The National Library of Norway
• Helsingin Yliopiston Kirjasto - Suomen kansalliskirjasto - The Helsinki University Library - The National Library of Finland
• BIBSYS - Norweigan Union Catalog
• Nordic Libraries
• Libris - Union catalog of Sweden

• Swiss National Library
• Schweizerische Landesbibliothek: Helveticat
• Swiss National Bibliography
• Hochschulbibliotheken Schweiz
• IDS: Informationsverbund Deutschschweiz
• SWITCH: Swiss Libraries

• The British Library
• National Library of Scotland
• National Library of Wales
• Consortium of University Research Libraries (CURL)
• M25 Consortium of Higher Education Libraries
• COPAC - a merged online catalog of 24 university research libraries in the UK and Ireland