The websites listed below link to primary documents on the Ancient World and the Medieval era.
The WMU Medieval Document Collection contains primarily Cistercian items from European abbeys of the 1100s-1400s. Original materials were imaged at high resolution to facilitate research and include some detail views. Items are from several collections, including the Dom Obrecht Cistercian Studies Collection on permanent loan to the Institute of Cistercian Studies Library housed at WMU Libraries Special Collections
Detail of a Cistercian Antiphonary, c1173-1291, from the Abbazia di Morimondo, Milan, Italy.
(Courtesy of Western Michigan University Libraries, Special Collections)