This article explores the relationships between faculty library use, their perceptions of the importance of library resources, and its impact on their research productivity at a public research university. The authors used a self-reported faculty survey and publication records from a faculty activity reporting system to answer this question. Findings showed that faculty's perceptions of the library resource for their research had no relationships with faculty research productivity, whereas a positive correlation was found between the frequency of use of online journals and databases, and faculty research productivity. Qualitative findings revealed that faculty viewed the library as providing and purchasing the needed library resources, and that they valued the librarians and library services as essential to their teaching and research.