Columbia subject headings:
Architecture, Domestic--Pennsylvania--Philadelphia.
Architecture, Georgian--Pennsylvania--Philadelphia.
Powel House (Philadelphia, Pa.)
Harvard subject headings:
Architecture, Domestic--Pennsylvania--Philadelphia.
Architecture, Georgian--Pennsylvania--Philadelphia.
Architecture--Pennsylvania--Philadelphia--History--18th century.
Philadelphia.--Powel House.
Powel House (Philadelphia, Pa.)
Powel, Elizabeth Willing, 1742 or 1743-1830--Homes and haunts
Powel, Samuel, 1738-1793--Homes and haunts
Princeton subject headings:
Architecture, Domestic--Pennsylvania--Philadelphia.
Architecture, Georgian--Pennsylvania--Philadelphia.
Architecture--Pennsylvania--Philadelphia--18th century.
Philadelphia. Powel House.