Major digital collections
These sites offer especially large collections of specialist research, where specific works might be searched and found:
Digitized Collections of the Prussian Cultural Heritage Foundation
Digital Collections of the University of Münster (theology and religion)
Digitheo of the University of Tübingen (theology in the 19th century)
Freimann Collection of the University of Frankfurt (wissenschaft des judentums)
MENAdoc of the University of Halle (middle east, north africa, islamic studies)
