Columbia subject headings:
Italy--Description and travel--Early works to 1800.
Powel, Samuel, 1738-1793--Diaries.
Powel, Samuel, 1738-1793--Travel--Italy.
Rome (Italy)--Description and travel--Early works to 1800.
Harvard subject headings:
Philadelphia (Pa.)--Biography.
Powel, Samuel, 1738-1793--Diaries.
Powel, Samuel, 1738-1793--Travel--Italy--Rome.
Rome (Italy)--Description and travel--Early works to 1800.
Travelers--Pennsylvania--Philadelphia--18th century.
Travelers--Pennsylvania--Philadelphia--History--18th century.
Visitors, Foreign--Italy--Rome--History--18th century.
Princeton subject headings:
Diaries.
Italy--Description and travel.
Powel, Samuel, 1738-1793--Diaries.
Powel, Samuel, 1738-1793--Travel--Italy.
Rome (Italy)--Description and travel.