Columbia subject headings:
Poor children--England--London--History.
Harvard subject headings:
London (England)--Social conditions.
Poor children--England--London--History--19th century.
Poor children--England--London--History--20th century.
Princeton subject headings:
London (England)--Social conditions.
Poor children--England--London--History--19th century.
Poor children--England--London--History--20th century.