WorldCat, produced by the Online Computer Library Center (OCLC), is the world's largest catalog of library catalogs. Featuring more than 300 million bibliographic records for books, scores, periodicals, videos, maps, recordings, and other items, WorldCat includes holdings records of more than 70,000 libraries worldwide. WorldCat / OCLC is the backbone of the Library's interlibrary loan service. To access WorldCat, go to the Library homepage, click on "Browse our Databases by Title," scroll down, and click on WorldCat (not World Cat Local).