The Rincker Memorial Library at Concordia University Wisconsin is a private research library with a collection of over 100,000 physical books and 400 scholarly journals. The Rinker library also has access to an additional 150,000 eBooks and 50,000 electronic periodicals. The university's Arnold H. and Vern L. Moeller Rare Books Room contains a collection of over 300 items dating from the 15th through 19th centuries, primarily related to the historical development of Lutheranism, including texts by Augustine of Hippo, Francis Bacon, Martin Luther and Philipp Melanchthon.