1. HathiTrust and Print Storage Building around a digital core

2. HathiTrust Content Growth

3. Content Distribution * As of May 1, 2011 8,625,158 Total volumes 2,297,041 Public Domain 4,722,664 Book titles 209,930 Serial titles

4. Content Distribution * As of May 1, 2011

5. Dates * As of May 1, 2011 Statistics and Visualizations

6. Breakdown of HathiTrust book corpus by publication date Bibliographic Indeterminacy and the Scale of Problems and Opportunities of "Rights" in Digital Collection Building Bibliographic Indeterminacy and the Scale of Problems and Opportunities of "Rights" in Digital Collection Building – 2/2011

7. Breakdown of HathiTrust book corpus by publication date

8. Language Distribution (1) The top 10 languages make up ~86% of all content Statistics and Visualizations * As of May 1, 2011

9. Language Distribution (2) The next 40 languages make up ~13% of total Statistics and Visualizations * As of May 1, 2011

10. Content over time * As of May 1, 2011

11. Dates (copyright)

12. A global change in the library environment June 2010 Median duplication: 31% June 2009 Median duplication: 19% Academic print book collection already substantially duplicated in mass digitized book corpus

13. Continuing growth of overlap … ARL overlap – 31% in June 2010 – 33% in Dec (adjustment: adding little-held works) – ~ 1% per 225,000 vols – 38% in May, 2011; 45% by December, 2011 Oberlin Group overlap – 41% in December, 2010 – Higher rate of overlap per added volume? – Close to 50% in May, 2011

14. And yet every library is different Our median rate of overlap may be the same But our overlap profiles will differ by library

58. And yet every library is different Our median rate of overlap may be the same But our overlap profiles will differ by library Our use patterns differ Our risk profiles differ Our roles vis-à-vis our constituencies differ Thus, the need to act independently on common data

59. Extending the holdings database HathiTrust print holdings database – Basis for new cost model (overlap of in-copyright) – Basis for lawful uses (e.g., print disabilities, Section 108) – A more complete picture than elsewhere Print monograph storage proposal – Enable partners to register commitments – Establish definitions (e.g., environment, use and condition) – Build in cost-sharing: collectively fund those that make commitments – Communicate information to partners to facilitate decision-making

60. Next steps? Work to develop draft proposal, led by Tom Teper, underway by HathiTrust Collections Committee (Ivy Anderson, chair) Early draft for review to Executive Committee in May/June Final version from Executive Committee to partners in late summer Consideration as part of new cost model at Constitutional Convention