Columbia subject headings:
Building, Iron and steel.
New York (N.Y.)--Guidebooks.
SoHo (New York, N.Y.)--Buildings, structures, etc.
Harvard subject headings:
Architecture--New York (State)--New York
Cast-iron fronts (Architecture)--New York (State)--New York.
New York (N.Y.)--Buildings, structures, etc.
Princeton subject headings: