Columbia subject headings:
Rome (Italy)--Social life and customs.
Theater--Italy--Rome--History.
Visitors, Foreign--Italy--Rome.
Harvard subject headings:
Americans--Italy--Rome--History--19th century.
Performing arts--Italy--Rome--History--19th century.
Rome (Italy)--Buildings, structures, etc.
Theater--Italy--Rome--History--19th century.
Princeton subject headings:
Americans--Italy--Rome.
Theater--Italy--Rome--History.