A global library resource
Like the knowledge it describes, WorldCat grows steadily every day from the contributions of member libraries in the OCLC cooperative.
When you contribute library data to WorldCat, you help grow the world’s largest and most comprehensive catalog of library resources from around the world, with more than 339 million bibliographic records that represent more than 2 billion items held by participating libraries.
WorldCat facts and statistics
Number of bibliographic records
Number of holdings