Here’s a potentially very useful 64 page reference resource (PDF) that might be useful when conducting research about library value measurement (value, outcomes, ROI).
It contains more than 900 individual entries from library literature.
This thesaurus was compiled and organized by Miranda Orvis, Denise F. Quintel, Rachel Fleming-May from the University of Tennessee.
Access to the thesaurus and database are free.
Direct to Lib-Value Thesaurus (68 pages; PDF)
Direct to Lib-Value Bibliographic Database
Note: Many entries include links to the full text material and/or source to access it.