This contains nearly 3000 volumes from the private library of Rev. William Heidt, O.S.B. Rev. Heidt was the editor in chief of Liturgical Press in Collegeville, Minnesota for nearly twenty five years, both prior to and after the liturgical reform that Vatican II initiated. A Benedictine monk at St. John’s Abbey and University in Collegeville, Fr. Heidt’s collection reflects the remarkable liturgical renewal movement of the second half of the 20th century. The collection is rich in historical, sacramental, and liturgical texts. Originally trained in Old Testament Studies at the Catholic University of America in the 1930’s, Fr. Heidt’s collection also contains many works in biblical theology and spiritual theology. In addition to monographs, there is a wide-ranging collection of pamphlets. The collection came to Boston University School of Theology from Holy Apostles Seminary in Comwell, Connecticut, where Fr. Heidt spent the last 10 years of his teaching career.