List of sources:
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Gunn, M. & Codd, L.E. Botanical exploration of southern Africa. Cape Town: Balkema, 1981.
Laidler, P.W. Medical establishments and institutions at the Cape... South African Medical Journal, 1938, Vol. 12(8), pp. 273-278.
MacRay, C. Life etched in stone: Fossils of South Africa. Johannesburg: Geological Society of South Africa, 1999.
Malherbe, D.F. du T. Family register of the South African nation, 3rd ed. Stellenbosch: Tegniek, 1966.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Grisbrook, Charles Hudson/Grisbrook, Charles/Grisbrook, C.H./Grisbrook, C.
Pama, C. British families in South Africa, their surnames and origins. Capt Town: Human & Rousseau, 1992.
Rogers, A.W. The pioneers in South African geology and their work. Transactions of the Geological Society of South Africa, 1937, Annexure to Vol. 39, pp. 1-139.
South African bibliography to the year 1925. London: Mansell, 1979.
South African Commercial Advertiser, 31 October 1829, p. 3, South African Institution.
South African Quarterly Journal, 1829, Vol. 1(1), pp. 82-85: Proceedings of the South African Institution; 1830, Vol. 1(4) and 1831, Vol. 1(5): Grisbrook's papers.