Columbia subject headings:
Ayers, Henry, 1821-1897.
Businessmen--Australia--South Australia--Biography.
Copper mines and mining--Australia--Burra (S.A.)--History.
Heads of state--Australia--South Australia--Biography.
South Australia--History--19th century.
Harvard subject headings:
Ayers, Henry, 1821-1897.
Businessmen--Australia--South Australia--Biography.
Heads of State--Australia--South Australia--Biography.
Immigrants--Australia--South Australia--Biography.
Miners--Australia--South Australia--Biography.
South Australia--History--19th century.
Princeton subject headings:
Ayers, Henry, 1821-1897.
Businessmen--Australia--South Australia--Biography.
Heads of state--Australia--South Australia--Biography.
Immigrants--Australia--South Australia--Biography.
Miners--Australia--South Australia--Biography.
South Australia--History--19th century.