Columbia subject headings:
Christian drama--Presentation, etc.--Congresses.
Europe--Religious life and customs--Congresses.
Mysteries and miracle-plays--History and criticism--Congresses.
Theater--Europe--History--15th century--Congresses.
Harvard subject headings:
Christian drama--History and criticism--Congresses.
Christian drama--Presentation, etc.--History--Congresses.
Drama, Medieval--History and criticism--Congresses.
Europe--Religious life and customs--Congresses.
Moralities--History and criticism--Congresses.
Mysteries and miracle-plays--History and criticism--Congresses.
Theater--Europe--History--Congresses.
Theater--History--Medieval, 500-1500--Congresses.
Princeton subject headings:
Christian drama--History and criticism--Congresses.
Christian drama--Presentation, etc.--History--Congresses.
Drama, Medieval--History and criticism--Congresses.
Europe--Religious life and customs--Congresses.
Moralities--History and criticism--Congresses.
Mysteries and miracle-plays--History and criticism--Congresses.
Theater--Europe--History--Congresses.
Theater--History--Medieval, 500-1500--Congresses.