List of sources:
Barnard, K.H. Personal names in South African conchology. Cape Town: Conchological Society of Southern Africa, 1965.
Doidge, E.M. South African fungi and lichens to the end of 1945. Bothalia, 1950, Vol. 5, pp. 1-1094 (see p. 43).
Gunn, M. & Codd, L.E. Botanical exploration of southern Africa. Cape Town: Balkema, 1981.
Herbert, D. & Kilburn, D. Field guide to the land snails and slugs of eastern South Africa. Pietermaritzburg: Natal Museum, 2004.
National Automated Archival Information Retrieval System (NAAIRS). http://national.archives.gov.za/naairs.htm Documents relating to Rump, William George.
William George Rump. Geni, at https://www.geni.com/people/William-Rump/6000000039113053895 as on 3 August 2020.