""OverCat is LibraryThing's new index of 32 million library records, assembled from libraries around the world, and the first step in a major upgrade of LibraryThing's cataloging functions. OverCat was assembled from over 700 sources. The core consists of full datasets from the Library of Congress, Washington State, Boston College, Oregon State, and Talis Base (a collection of UK libraries). To this we've added records from the hundreds of thousands of books members have searched for and added from the 690 libraries LibraryThing connects to. The end result is arguably the second-largest searchable database of library records in existence, after OCLC"