Columbia subject headings:
United States--Commerce--History--16th century.
United States--Commerce--History--17th century.
United States--Commerce--History--18th century.
United States--History--Colonial period, ca. 1600-1775.
Harvard subject headings:
Princeton subject headings:
United States--Commerce--History--17th century.
United States--History--Colonial period, ca. 1600-1775.