This article describes the results of a survey that gathered data on perceptions and use of e-books from undergraduate students, graduate students, faculty, and staff at two Maryland research universities in 2019. It follows two previous surveys in 2012 and 2014 by the same team of investigators, with slight changes in personnel, and compares results across time, by user affiliation with the university, and by STEM versus non-STEM disciplines. The study concludes with a discussion of the major findings and their implications for academic libraries and publishers, as well as areas for further inquiry.