Columbia subject headings:
Allegory.
Architecture and literature--History--To 1500.
English literature--Middle English, 1100-1500--History and criticism.
Harvard subject headings:
Allegory.
Architecture and literature--History--To 1500.
Architecture in literature
English literature--Middle English, 1100-1500--History and criticism
Literature, Medieval--History and criticism
Princeton subject headings:
Allegory.
Architecture and literature--History--To 1500.
Architecture in literature.
Literature, Medieval--History and criticism.