List of sources:
Europeans in East Africa. Retrieved on 17 June 2021 from http://www.europeansineastafrica.co.uk/_site/custom/database/default.asp?a=viewIndividual&pid=2&person=3096
Venter, R.J. Bibliography of regional meteorological literature. Vol. 1. Southern Africa, 1486-1948. Pretoria: Weather Bureau, 1949.
Who was who, Vol. 1, 5th ed. London: Adam & Black, 1967.
Woosnam, R.B. The melon of the Kalahari desert. East African Geographical Review, 1913, Vol. 3(6), pp. 25-31. Retrieved on 17 June 2021 from https://journals.co.za/doi/pdf/10.10520/AJA19376812_293