A web-based survey of book conservation treatment practices in research libraries was conducted in 2007. Survey results were summarized in a 2010 report that documented standard practice, moderate-use, and low-use book conservation treatments for special collections and general collections in research libraries in the United States. Similarities and differences between special and general collections practices were highlighted. In an effort to better understand the differences in practices observed in the first report, the authors revisit the data to identify whether, and how, the demographic characteristics of book conservation practitioners are correlated with particular treatment practices. Noting the trend suggested in the literature toward both hybrid facilities–those dedicated to both special and general collections–as well as hybrid practitioners, the authors were especially curious whether such facilitates and practitioners might approach treatment differently. The data collected in 2007 were analyzed to identify whether key demographic variables–such as practitioner training, type of collections served by a practitioner, size of library, type of library, and type of conservation facility–were correlated with specific treatment practices. In this report, specific trends associated with the demographic variables are identified and explored. Areas of further research suggested by the results of the study are identified.