Columbia subject headings:
Harvard subject headings:
Brotherhoods--Europe--History--To 1500.
Catholic Church--Europe--Societies, etc.--History.
Church work with the poor--Europe--History.
Confraternities--Europe--History--To 1500.
Europe--Church history--600-1500.
Monasticism and religious orders--Europe--History--To 1500.
Princeton subject headings:
Confraternities--Europe--History.
Guilds--Europe--History.
Societies--Europe--History.