Columbia subject headings:
Art museum architecture--Pennsylvania--Philadelphia.
Benjamin Franklin Parkway (Philadelphia, Pa.)
Philadelphia (Pa.)--Buildings, structures, etc.
Philadelphia Museum of Art.
Urban beautification--Pennsylvania--Philadelphia--History--20th century.
Harvard subject headings:
Art museum architecture--Pennsylvania--Philadelphia--Exhibitions.
Art museum architecture--Pennsylvania--Philadelphia.
Benjamin Franklin Parkway (Philadelphia, Pa.)
Benjamin Franklin Parkway (Philadelphia, Pa.)--Exhibitions.
Philadelphia (Pa.)--Buildings, structures, etc.
Philadelphia (Pa.)--Buildings, structures, etc.--Exhibitions.
Philadelphia Museum of Art--Exhibitions.
Philadelphia Museum of Art.
Urban beautification--Pennsylvania--Philadelphia--History--20th century--Exhibitions.
Urban beautification--Pennsylvania--Philadelphia--History--20th century.
Princeton subject headings:
Art museum architecture--Pennsylvania--Philadelphia.
Benjamin Franklin Parkway (Philadelphia, Pa.)
Philadelphia (Pa.)--Buildings, structures, etc.
Philadelphia Museum of Art.
Urban beautification--Pennsylvania--Philadelphia--History--20th century.