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