Columbia subject headings:
Coal miners' spouses--England, Northern--History--20th century.
England, Northern--Social conditions--20th century.
Harvard subject headings:
Coal miners' spouses--England, Northern--History--20th century.
Coal miners' spouses--England, Northern--Social conditions--20th century.
Coal miners--England, Northern--History--20th century.
Coal miners--England, Northern--Social conditions--20th century.
Coal mines and mining--England, Northern--History--20th century.
Coal trade--England, Northern--History--20th century.
England, Northern--Social conditions--20th century.
Women--England, Northern--Social conditions.
Princeton subject headings:
Coal miners' spouses--England, Northern--History--20th century.
Coal miners--England, Northern--History--20th century.
Coal mines and mining--England, Northern--History--20th century.
Coal trade--England, Northern--History--20th century.
Women--England, Northern--Social conditions.