Columbia subject headings:
London Bridge (London, England)
St. Paul's Cathedral (London, England)
Whitehall (London, England)
Harvard subject headings:
London Bridge (London, England)
St. Paul's Cathedral (London, England)
Whitehall (London, England)
Whitehall, London.
Princeton subject headings:
London Bridge (London, England)
St. Paul's Cathedral (London, England)
Whitehall, London.