Searchable Database of Library Value and ROI Literature
It is a three year study funded by the U.S,-based Institute of Museum and Library Services.
As part of the project, the ARL has compiled a searchable database of books, book chapters, journal articles, theses and dissertations, reports, presentations, and free websites on the subject of measuring library value:
"In addition to works presenting accounts of specific assessment projects, database users will find more general discussions of conceptual approaches to assessing value and return on investment, and descriptions of specific methods for evaluating the positive outcomes of providing a wide variety of resources and services."[Source: Stephen's Lighthouse]