List of sources:
Cape Society of Civil Engineers. Minutes of Proceedings, 1909, Vol. 7, Report of Council for 1908, and Members; 1910, Vol. 8, Council.
National Archives Repository (TAB), Source MHG, Vol. 0, Ref. 2209/54: Death notice, John Maxwell Granger.
South African Society of Civil Engineers. Minutes of Proceedings, 1913, Vol. 11, Members.