WorldCat is a global network of library content and services that uses the Web to let member institutions be more connected, more open and more productive. Alexandria Library adds its holdings to WorldCat, the world's largest and most comprehensive catalog. With 258 million bibliographic records that represent more than 1 billion individual items held by participating institutions. Users find what they're looking for because many items cataloged in WorldCat cannot be discovered through any other resource!
(For fun, watch institutions around the world add resources to WorldCat through the live Watch WorldCat Grow meter!)