Title: Das schwarze Gebetbuch
Subjects: Books of hours, Catholic Church, Facsimiles, Flemish Illumination of books and manuscripts, Illustrations, Liturgy, Manuscripts, Latin (Medieval and modern), Medieval Illumination of books and manuscripts, Schwarzes Gebetbuch, Texts, Österreichische Nationalbibliothek
Places: Flanders
People: Galeazzo Maria Sforza Duke of Milan (1444-1476)