Columbia subject headings:
Industrialization--History--19th century.
Lamps--History--19th century.
Lighting--Social aspects.
Municipal lighting--History--19th century.
Harvard subject headings:
Industrialization--History--19th century.
Lamps--History--19th century.
Lighting--Social aspects.
Municipal lighting--History--19th century.
Street lighting--History--19th century.
Princeton subject headings:
Industrialization--History--19th century.
Lamps--History--19th century.
Lighting--Social aspects.
Street lighting--History--19th century.