Columbia subject headings:
Capitalists and financiers--New Caledonia--Biography.
Capitalists and financiers--Vanuatu--Biography.
Higginson, John, 1839-1904.
Immigrants--New Caledonia--Biography.
New Caledonia--History--19th century.
Vanuatu--History--19th century.
Harvard subject headings:
Higginson, John, 1839-1904.
Mines and mineral resources--New Caledonia.
New Caledonia--Economic conditions.
Nickel mines and mining--New Caledonia.
Vanuatu--Economic conditions.
Princeton subject headings: