Columbia subject headings:
Architecture--New York (State)--New York--History--19th century.
Architecture--New York (State)--New York--History--20th century.
Commercial buildings--New York (State)--New York.
Historic districts--New York (State)--New York.
Madison Square North Historic District (New York, N.Y.)
New York (N.Y.)--Buildings, structures, etc.
Harvard subject headings:
Princeton subject headings:
Architecture--Conservation and restoration--New York (State)--New York.
Madison Square North Historic District (New York, N.Y.)
New York (N.Y.)--Buildings, structures, etc.