Dr. Stefan Reinsberg worked with colleagues to adapt an Open Stax Physics textbook that they put into an edX site for a first-year physics course. They not only saved students money by doing so, but also customized the book to better fit the course. Stefan was one of the authors of a research study on student perceptions and use of the open textbook for that course: The Adoption of an Open Textbook in a Large Physics Course: An Analysis of Cost, Outcomes, Use and Perceptions (International Review of Research in Open and Distributed Learning, 2017).