Worldwide

• RLG Union Catalog--RLIN
  Unified catalog of the Research Libraries Group

• RedLightGreen
  An easy to search database of books, based on the RLG Union Catalog. Princeton is testing this resource during the 2004 academic year.

• WorldCat
  Unified catalog of OCLC member libraries

• Center for Research Libraries
  Princeton is a member of the Center and may borrow research materials such as foreign and domestic newspapers, foreign dissertations, documents for extended periods.

• LibDex. The Library Index
  Worldwide listing of library homepages, web online catalogs, Friends of the Library pages

• National and major libraries
  Worldwide listing national and major libraries

• Karlsruhe Virtual Catalog
  Connections to many European library catalogs

• Worldwide library web sites
  Libweb - Library web servers (Worldwide) via WWW

Local

• Institute for Advanced Study
• Princeton Public Library
• Princeton Theological Seminary
• Rutgers University Library
• New Jersey Libraries and Catalogs

Regional

• Brown University
• Columbia University
• Cornell University
• Dartmouth College
• Harvard University
• Library of Congress
• New York Public Libraries
• New York University
• Temple University
• University of Pennsylvania
• Yale University