Columbia subject headings:
Chantries.
Collective bargaining--Great Britain--Congresses.
Collective bargaining--Great Britain.
Great Britain--Church history--16th century.
Labor unions--Great Britain--Congresses.
Labor unions--Great Britain.
Purgatorial societies--History.
Purgatory--History of doctrines.
Reformation--England.
Harvard subject headings:
Collective bargaining--Great Britain.
Labor unions--Great Britain
Princeton subject headings:
Collective bargaining--Great Britain--Congresses.
Labor unions--Great Britain--Congresses.