List of sources:
Agricultural Journal of the Cape of Good Hope, 1906, Vol. 28, article by Bowhill.
Cape of Good Hope (Colony). Annual Report of the Colonial Veterinary Surgeon, 1905-1906.
Cape of Good Hope (Colony). Civil service list, 1906.
Cape of Good Hope (Colony). Report of the Director of Agriculture, 1905.
Curson, H.H. South African medical pioneers in veterinary science. South African Medical Journal, 1933, Vol. 7, pp. 745-751.
Google scholar. http://scholar.google.co.za Publications by T. Bowhill.
National Union Catalogue, pre-1956 imprints. London: Mansell, 1968-1980.
Posthumus, P.J. An index of veterinarians in South Africa (4th ed.) Pietermaritzburg: P.J. Posthumus, 1982.
Robinson, E.M. The development of veterinary bacteriology in South Africa. South African Journal of Science, 1932, Vol. 29, pp. 41-53.
Royal Society of London. Catalogue of scientific papers [1800-1900]. London: Royal Society, 1867-1925.
Vets past. http://www.nda.agric.za/docs/Vetweb/Vets Past AB.htm
1919 Birthday Honours (MBE). https://en.wikipedia.org/wiki/1919_Birthday_Honours_(MBE)