Columbia subject headings:
Elite (Social sciences)--Europe--History.
Metal-work--Europe--History.
Travelers--Europe--History.
Harvard subject headings:
Elite (Social sciences)--Europe--History.
Metal-work--Europe--History.
Travelers--Europe--History.
Princeton subject headings:
Elite (Social sciences)--Europe--History.
Metal-work--Europe--History.
Travelers--Europe--History.