Columbia subject headings:
Architecture--Pennsylvania--Philadelphia--History--20th century.
Kahn, Louis I., 1901-1974.
Harvard subject headings:
Architects--United States
Architecture, Modern--20th century--Pennsylvania--Philadelphia.
Kahn, Louis I., 1901-1974.
Princeton subject headings:
Architecture, Modern--20th century--Pennsylvania--Philadelphia.
Facsimiles.
Kahn, Louis I., 1901-1974.