This exhibition highlights a selection of rare and special books on religion, published from the thirteenth to the nineteenth centuries. This collection process began in 1991 with the transfer of the rare book collection of Mundelein College to the Newberry by Sister Ann Ida Gannon. Her generous example led to the donation of additional religious collections – six institutional and two private – totaling more than eight thousand volumes. These additions have proven to be a perfect match for the Newberry’s own rare book collection. Now that these hidden treasures are cataloged and properly conserved, they are available to students and scholars from all over the world. Generous grants by the B.H. Breslauer Foundation and gifts from donors to the Sister Ann Ida Gannon Initiative have made this collection possible.