Columbia subject headings:
Historic buildings--Pennsylvania--Philadelphia.
Philadelphia (Pa.)--Biography.
Philadelphia Suburban Area (Pa.)
Harvard subject headings:
Architecture, Colonial--Pennsylvania--Philadelphia.
Historic buildings--Pennsylvania--Philadelphia
Philadelphia (Pa.)--Biography.
Philadelphia (Pa.)--Buildings, structures, etc.--History.
Society of Friends--Pennsylvania--Philadelphia.
Princeton subject headings:
Philadelphia (Pa.)--Biography.
Philadelphia (Pa.)--Historic houses.
Society of Friends--Pennsylvania--Philadelphia.