List of sources:
General directory of South Africa, 1909, 1910, 1911.
FamilySearch: John Pole Kitson. https://www.familysearch.org/en/tree/person/details/GZ69-BP1
Medical and pharmacy register for the Colony of the Cape of Good Hope, 1907.
National Archives Repository (TAB), Source MHG, Vol. 0, Ref. 80705: Correspondence relating to the death of John Pole Kitson.
Pietermaritzburg Archives Repository, Vol. NMC 34. [List of medical practitioners, dentists, and chemists and druggists in the Province of the Cape of Good Hope, as on 31 December 1915].
Transvaal Museum. Annual report for the year 1907/8.