The Counting on Results (COR) goals were to develop and demonstrate the potential utility of new tools for outcome-based evaluation of public library services. The project developed these tools and demonstrated their use by 45 public libraries representing 20 states and all four major regions of the United States (i.e., Northeast, South, Midwest, West). In addition to reporting data on conventional library service outputs, the project generated data on the observed library activities of more than 40,000 patrons and reports of the outcomes of library services from over 5,500 patrons. Thus, this project completed the largest, most comprehensive, and most detailed multi-state data collection of this type attempted to date.