'Princes Gate and Princes Gardens: the Freake Estate, Development by C.J. Freake', in Survey of London: Volume 45, Knightsbridge, ed. John Greenacombe (London, 2000), pp. 191–205. British History Online http://www.british-history.ac.uk/survey-london/vol45/pp191-205 [accessed 28 February 2020]. See plate 90.
PAP (2011). "Zdjęcia z Londynu w cyfrowym archiwum Karty" (in Polish). Retrieved 27 February 2020. Polish press agency report of the digitalisation of five thousand war-time photographs from the Institute's archive in London.