Available Indexes

Update on February 2014 Activities

March 14, 2014 Syndicate content

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Executive Director Search

We are very pleased to announce the appointment of Mike Furlough as the Executive Director of HathiTrust. Mike will begin as Executive Director on May 19. The full announcement can be read at http://www.hathitrust.org/mike_furlough_executive_director.

11 Million Volumes

HathiTrust reached a new milestone, surpassing 11 million volumes in the digital repository. A history of HathiTrust’s road to the first 10 million volumes is available on the HathiTrust blog.

Updated HathiTrust Volume Identifiers

HathiTrust has made a one-time, batch change to a set of approximately 320,000 volume identifiers. These volumes were ingested with an incorrect identifier due to a vendor issue. The change involves adding a $ symbol to affected identifiers.  A full list of the updated identifiers is available at http://www.hathitrust.org/hathifiles. Any institutions or individuals that save links to HathiTrust volumes locally should update these identifiers to ensure working links. Please contact feedback@issues.hathitrust.org with any issues or questions.



HathiTrust ingested new content from the Universidad Complutense de Madrid, received content from the University of Delaware, and communicated with Emory University, University of Chicago, and University of Washington about submission of locally-digitized content.

Internet Archive-digitized

HathiTrust ingested new content from the University of Massachusetts, Amherst, and continued conversations about ingest with the University of Alberta.


California Digital Library (CDL) loaded 71,778 new or updated bibliographic records from partners into Zephir. Information about bibliographic metadata submission is available at http://www.hathitrust.org/bib_data_submission.

Working Groups and Committees

Program Steering Committee

The PSC continued bi-weekly meetings, focusing discussions on the HathiTrust Distributed Print Monographs proposal and a proposed HathiTrust metadata sharing and use policy.


Copyright Review

A summary of the determinations from HathiTrust copyright review activities in February is given below. See CRMS-US and CRMS-World, projects funded by IMLS, for further information.




Public Domain Determinations

All Determinations

Public Domain Determinations

All Determinations


2,561 2,727 161,510 309,548


2,670 5,320 49,832 96,402


5,231 8,047 211,342 405,950

Government Documents Registry

Project staff continued to draft functional requirements for the registry, and are in the process of obtaining initial feedback on the requirements from selected members from HathiTrust partner and non-partner institutions. Staff also continued to develop methods for identifying duplicate and related records, and explore ways the US government documents community could contribute to the development of the registry.

HathiTrust Research Center

The HTRC invited eight finalist candidates in an RFP for WCSA, a Mellon Foundation-funded project to support the prototyping of workset creation tools, to Chicago to present their proposals. Four of the candidates will be awarded grants of $40,000 over 9 months to develop their prototypes.


University of Michigan staff began to migrate the Prepper module of mPach to a new Ruby/Rails development environment (a full list of mPach modules is available at http://www.lib.umich.edu/mpach). Staff added an mPach article to the HathiTrust test repository, and began to evaluate additional tools for converting articles into JATS XML that might be incorporated into the Norm component of Prepper.

Development Updates

HathiTrust institutions performed the following work related to applications and infrastructure:

Full-text Search

Staff continued to test and refine the index synchronization and release process on new high-performance storage for full-text search. After stability problems were encountered during attempts to roll out the new storage in production, staff began working with the storage and network equipment suppliers to troubleshoot and optimize performance. (See Availability, below.)

Staff finished developing and testing a new version of SLIP (Solr Large-scale Indexing Processor), which is used to index the full-text of works in HathiTrust. Production deployment will occur in March. Staff added features to support the indexing of JATS XML content, and indexing of volumes into a configurable number of “chunks”. Staff have been exploring chunking volumes at indexing time in order to improve the relevance ranking of search results. Staff also added indexing support for words that are hyphenated across line breaks on pages of text. This is effective immediately for searches conducted within volumes and will take effect for volumes in cross-repository searches as volumes are indexed going forward. Approximately 4.5 million HathiTrust volumes will be re-indexed in mid-March during a regular monthly update of HathiTrust partner print holdings information; a complete re-indexing process is planned for late April. Staff additionally integrated a spelling suggester feature into a Solr request handler in development and began testing the suggester with several data sets.


Staff at California Digital Library developed an “Embed this Book” feature that is now available in the “Share” section of the PageTurner sidebar. Users can copy the HTML for embedding either 1up or 2up views into websites and blogs.

Storage Replacement Cycle

Staff completed installation of new and replacement storage for the 2014 cycle. Retired storage will undergo security wiping in March and be returned to fulfill trade-in credit obligations.



Cumulative 12-month availability of repository access: 99.827%*

HathiTrust was unavailable for some or all users on Monday, February 3 from 12:05-12:10pm and Tuesday, February 4 from 1:45-1:55am and 6:45-7:00am due to stability problems encountered during attempted production rollouts of new high-performance storage for full-text search.

HathiTrust was unavailable for some or all users on Thursday, February 20 from 2:53-3:07pm due to a temporary network issue at the Michigan instance that occurred while the Indiana instance was out of service for routine maintenance.

* Repository access refers to page viewing and full-text search functionality, i.e., user-facing applications. It does not refer to preservation or storage infrastructure, which is under continual operation.


A maintenance outage occurred on the Zephir FTPS server on March 6, 2014 from 6:00-6:30am PST. During the brief maintenance outage, contributors were not able to submit bibliographic records. Zephir systems other than the FTPS server were not affected, and maintenance was conducted successfully.

New Growth

As of February 1:

  February Overall
Boston College 110 2,796
Columbia University 1 65,037
Cornell University 3,120 444,331
Duke University 1,394 7,258
Harvard University 0 237,435
Indiana University 0 195,580
Keio University 8,829 88,954
Library of Congress 18,205 107,929
New York Public Library 2 288,372
North Carolina State University 0 3,196
Northwestern University 21 37,601
Ohio State University 19,439 19,445
Penn State University 1,906 71,329
Princeton University 0 251,710
Purdue University 0 44,698
Texas A&M University 0 1,201
Universidad Complutense 133 112,147
University of California 7,725 3,461,923
The University of Chicago 85 39,077
University of Florida 2 9,765
University of Illinois 10,988 126,603
University of Massachusetts, Amherst 8,731 8,731
University of Michigan 1,043 4,668,481
University of Minnesota 1,148 119,768
University of North Carolina, Chapel Hill 0 17,025
University of Virginia 0 50,821
University of Wisconsin 21 555,947
Utah State 0 117
Yale University 0 23,678
Total 82,903 11,060,955

Public Domain (~33%)

Total*                                                                59,381 3,675,204

* Includes volumes opened through copyright review and rights holder permissions

Summary of Issues Received by User Support

Issue Type February 2014 January 2014
Content 220 102


200 86


18 15
Cataloging 165 142
Access and Use 130 114


82 59


16 8


0 2

Print on Demand

0 0

Inter-library loan

0 2

Full-PDF or e-copy requests

21 22


7 6

Data Availability and APIs

0 0

Reuse of content

2 2
Web applications 29 22

Functionality problems

13 9

Problems with login specifically

0 2

General Questions about Login

2 2

Partners setting up login

3 1

Usability issues

0 0

Feature requests

2 1
Partner Ingest 2 8
General 112 75


5 10


0 0


107 65
Total 658 462

Most Accessed Volumes

Organized crime in America: hearings before the Committee on the Judiciary, United States Senate, Ninety-eighth Congress, Pt. 1.
Quicksand, by Nella Larsen.
The Cosmopolitan, v.72 (1922).
The Utopia of Sir Thomas More, ed. with introduction, notes, and glossary by William Dallam Armes.
Consumption of the Lungs and Kindred Diseases, Treated and Cured by Kerosene, by Charles Oscar Frye.
Quintus Curtius [History of Alexander] with an English translation by John C. Rolfe.
The Human Figure, by John H. Vanderpoel
The making of the University of Michigan, 1817-1992 / Howard H. Peckham.
Concepts in Calculus, III : Multivariable Calculus
Roster of the Confederate soldiers of Georgia, 1861-1865, v.3.

March Forecast

  • Continue development of ePub and PDF generation from JATS.
  • Deploy the new version of SLIP, for full-text indexing.
  • Continue to explore relevance ranking solutions.

Papers & Presentations