May 17, 2022

4.5 Million Volumes From University of California Libraries Have Been Digitized and Contributed to HathiTrust Digital Library

From the University of California Digital Library (CDL):

The University of California Libraries recently contributed the 4,500,000th digitized book from their collections to HathiTrust Digital Library–a tremendous achievement resulting from 15 years of continuous digitization work.

The vast majority of these millions of volumes were generated via the Google Books Library Project, which UC joined in 2006. That year the mass digitization of UC’s library collections began in earnest when the Northern Research Library Facility (NRLF) started sending books to the Google Books Library Project for scanning. UC’s work with the Google Books Library Project has never paused–by the time UC’s 3,000,000th volume was digitized in 2010, UC San Diego, UC Santa Cruz, and UCLA had all begun sending collections to Google for digitization. Since then, UC San Francisco, the Southern Research Library Facility (SRLF), UC Davis, UC Berkeley, UC Riverside, UC Irvine, and UC Santa Barbara have all participated, with UC Santa Barbara, UC Berkeley, UC San Diego, UC Riverside, UCLA, and NRLF continuing to do so.

The Google Books Library Project is not the only source of UC’s scanned library collections. In 2005, UC Libraries were a founding member of the Open Content Alliance (OCA), a mass digitization project for which Internet Archive did the scanning. Almost 200,000 UC library public domain volumes were scanned by 2009 when the OCA initiative ended. These items were made available to the public via Internet Archive and were later added to HathiTrust. In addition to the Google and OCA mass digitization projects, many UC libraries (including UC San Diego, UC Berkeley, and UCLA) scan their own collections and contribute them to HathiTrust.

Read the Complete Blog Post Including List of Most Popular Full View Books From U. of California in HathiTrust, 2019

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.