Columbia subject headings:
Investments, Foreign--United States--History--19th century.
Investments, Foreign--United States--History--20th century.
Harvard subject headings:
Investments, Foreign--United States--History--19th century.
Investments, Foreign--United States--History--20th century.
Princeton subject headings:
Investments, Foreign--United States--History--19th century.
Investments, Foreign--United States--History--20th century.