• Buffalo & Erie County Public Library Catalog
• Library of Congress Online Catalog
• New York State Library Catalog
• SUNY Union Catalog 
• WorldCat

Western & Central New York

• Cornell University 
• Daemen College 
• D'Youville Library  
• Erie County Community College
• Niagara University
• Nioga Library System  
• Rochester Institute of Technology  
• St. Bonaventure University  
• University of Rochester

Southern Ontario

• Brock University 
• McMaster University 
• University of Guelph/Waterloo/Laurier 
• University of Toronto

National and Union Catalogs

• Center for Research Libraries - About CRL 
• COPAC - a merged online catalog of 24 university research libraries in the UK and Ireland 
• Digital Public Library of America - brings together the riches of America’s libraries, archives, and museums, and makes them freely available to the world
• European Library - Portal for 43 national libraries of Europe 
• Libweb - Library homepages worldwide 
• Library of Congress 
• National Libraries  
• National Libraries & State Libraries  (Wiki) 
• National Library of Medicine Catalog
• Open WorldCat - Records of library-owned materials in OCLC's WorldCat database