It’s no secret that college textbooks are getting more and more expensive. The Consumer Price Index (CPI) for textbooks has increased 140.47 percent from December 2001 to June 2023, nearly double the 71.27 percent increase in CPI for all items during that same period. To offset these costs, the University of Minnesota Libraries is helping replace commercial textbooks with openly-licensed materials across the Twin Cities and Duluth campuses.