for his Royal Air Force Memorial a short distance away on the bank of the River Thames. According to King, the Cenotaph's popularity with the public and its widespread use and adaptation by other artists, including professional rivals, showed the extent to which it became common property rather than a concept exclusive to Lutyens. The Imperial War Museum's War Memorials Register identified at least 55 replica or similar cenotaphs in Britain alone. See also World War I memorials Grade I listed buildings in the City of Westminster Grade I listed war memorials in England List of public art in Whitehall List of works by Edwin Lutyens Notes References Bibliography Books Richardson, David. "A Changing Meaning for Armistice Day", in Periodicals Citations 1920 sculptures British military memorials and cemeteries Buildings and structures completed in 1920 Cenotaphs in the United Kingdom Grade I listed buildings in the City of Westminster Grade I listed monuments and memorials Limestone sculptures in the United Kingdom Military memorials in London War memorials by Edwin Lutyens Whitehall Works of Edwin Lutyens in England World War I memorials in the United Kingdom World War II memorials in the United Kingdom