Columbia subject headings:
British--Spain--Huelva--History.
British--Spain--Huelva--Social life and customs.
Huelva (Spain)--History.
Huelva (Spain)--Social life and customs.
Harvard subject headings:
British--Spain--Huelva--History--19th century.
Huelva (Spain)--History--19th century.
Rio Tinto Company--History--19th century.
Princeton subject headings: