Columbia subject headings:
Labor unions--Scotland--History--18th century.
Labor unions--Scotland--History--19th century.
Working class--Scotland--History--18th century.
Working class--Scotland--History--19th century.
Harvard subject headings:
Labor unions--Scotland--History--18th century.
Labor unions--Scotland--History--19th century.
Working class--Scotland--History--18th century.
Working class--Scotland--History--19th century.
Princeton subject headings:
Labor unions--Scotland--History--18th century.
Labor unions--Scotland--History--19th century.
Working class--Scotland--History.