List of sources:
Gunn, M. and Codd, L.E. Botanical exploration of southern Africa. Cape Town: Balkema, 1981.
Jeanne M. Borle. Wikipedia. Retrieved on 20 August 2021 from https://en.wikipedia.org/wiki/Jeanne_M._Borle
Van der Merwe, C.F. Elim Hospital - the first 100 years. Part 1. South African Medical Journal, 2001, Vol. 91(12), pp. 1069-1072. Part 2, Ibid, 2002, Vol. 92(1), pp. 75-77.