May 16, 2022

LibraryThing’s OverCat Now Includes All 12.3 Million Open Access Bibliographic Records from the Harvard Library

That’s the word in a recent post on the LibraryThing Blog.

Big Kudos to LT!

From the Blog Post:

It took a while to process, but we’ve finally completed adding all 12.3 million MARC records (3.1GB of bibliographic goodness!) to LibraryThing. They’ve gone into OverCat, our giant index of library records from around the world—now numbering more than 51 million records! As a result, when searching OverCat under “Add books,” you’ll now see results “from Harvard OpenMetadata.”

See Complete Blog Post for More Info and Screenshot

Harvard released the 12.3 million records (using a CC0 license) on April 24th. Here’s our coverage.

See Also: EBSCO Discovery Service Adds the Complete Harvard Library Bibliographic Dataset Released Last Week

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.