Columbia subject headings:
Architecture--Pennsylvania--Philadelphia--Pictorial works.
Buildings--Pennsylvania--Philadelphia--Pictorial works.
Historic buildings--Pennsylvania--Philadelphia--Pictorial works.
Philadelphia (Pa.)--In art.
Philadelphia (Pa.)--Pictorial works.
Harvard subject headings:
Architecture--Pennsylvania--Philadelphia--Pictorial works.
Historic buildings--Pennsylvania--Philadelphia--Pictorial works.
Philadelphia (Pa.) in art.
Philadelphia (Pa.)--Buildings, structures, etc.--Pictorial works.
Philadelphia (Pa.)--Pictorial works.
Princeton subject headings:
Architecture--Pennsylvania--Philadelphia--Pictorial works.
Historic buildings--Pennsylvania--Philadelphia--Pictorial works.
Philadelphia (Pa.)--Buildings--Pictorial works.
Philadelphia (Pa.)--Description and travel.
Philadelphia (Pa.)--In art.
Philadelphia (Pa.)--Pictorial works.