The Future of Reading and Libraries in the Age of Digitization

http://www.newyorker.com/reporting/2007/11/05/071105fa_fact_grafton

Return on Investment for Public Libraries

Many public libraries are using Return on Investment (ROI) studies to describe the variety of benefits delivered by public libraries to their customers and to quantify the return on investment to taxpayers for monies invested in public libraries. The Library Research Service website provides links to many examples of ROI -
http://www.lrs.org/public/roi/