ProQuest Dissertations and Theses Global is the world's most comprehensive collection of dissertations and theses, covering materials back to the first U.S. dissertation, accepted in 1861, as well as to European dissertations from the 17th century. The database is the official dissertations repository for the Library of Congress, with 5.5 million bibliographic citations, 3 million full texts, 4,100 contributing institutions worldwide and 250,000 works added annually. Full-text coverage spans from 1743 to the present, with citation coverage dating back to 1637.

The Acta Sanctorum are one of the most important sources for the exploration of society and culture in the Early Christian and medieval Europe. Our knowledge of this epoch is almost exclusively based on the Hagiographic literature, in particular on this monumental collection of texts published over a period of 300 years by the Societé des Bollandistes. The Acta Sanctorum Database contains the complete text of the 68 volumes printed. -- Die Acta Sanctorum sind eine der wichtigsten Quellen für die Erforschung von Gesellschaft und Kultur im frühchristlichen und mittelalterlichen Europa. Unser Wissen über diese Epoche stützt sich nahezu ausschließlich auf die hagiographische Literatur, insbesondere auf diese monumentale Textsammlung, die über einen Zeitraum von 300 Jahren von der Société des Bollandistes veröffentlicht wurde. Die Acta Sanctorum Datenbank enthält den gesamten Text der 68 gedruckten Bände.

The Patrologia Latina Database is an electronic version of the first edition of Jacques-Paul Migne's Patrologia Latina, published between 1844 and 1855, and the four volumes of indexes published between 1862 and 1865. Patrologia Latina comprises the works of the Church Fathers from Tertullian in 200 AD to the death of Pope Innocent III in 1216. The complete Patrologia Latina is included with all prefatory material, original texts, critical apparatus and indexes. Migne's column numbers, essential references for scholars, are included.