List of sources:
Cape of Good Hope. Report of the Committee of the Public Botanic Gardens at Kimberley, 1881.
Cape of Good Hope. Report of the Trustees of the South African Museum, 1904.
Clinning, C. Southern African bird names explained. Johannesburg: Southern African Ornithological Society, 1989.
Dictionary of South African biography, Vol. 3, 1977.
Hocky, P.A.R. et al (eds). Roberts birds of southern Africa (7th ed.) Cape Town: John Voelcker Bird Book Fund, 2005.
National Union Catalogue, pre-1956 imprints. London: Mansell, 1968-1980.
Oxford dictionary of national biography. Oxford University Press, 2004.
Poynton, J.C. The amphibians of southern Africa: a faunal study (References: Boulenger, 1905b, 1907d). Annals of the Natal Museum, 1964, Vol. 17, pp. 1-334.
Tabler, E.C. Pioneers of Natal and South Eastern Africa, 1552-1878. Cape Town: Balkema, 1977.