Columbia subject headings:
Architecture, British.
Architecture, Modern--20th century.
Hawkins Brown.
Harvard subject headings:
Architectural firms--Great Britain.
Architecture--England--London--History--20th century--Catalogs.
Architecture--England--London--History--Catalogs.
Architecture--Great Britain--20th century.
Hawkins\Brown Architects.
Hawkins\Brown--Catalogs.
Princeton subject headings:
Architecture--Great Britain--History--20th century.
Hawkins\Brown.