Architect: Philip Watkinson Year: 1962 Archive sources British Postal Museum and Archive:POST 91/1706-1708; GPO Publicity Booklet (Portfolio Files "London: Trafalgar Square") Selected bibliographical references Architect & Building News 5 Dec 1962, p. 823; 25 Jan 1962, p. 179-182 Official Architecture Jan 1963, p. 40 Wood Jan 1963, p. 4-5