List of sources:
Boucher, M. Spes in Ardus: 'n Geskiedenis van die Universiteit van Suid-Afrika. Pretoria: Universiteit van Suid-Afrika, 1973.
Cape of Good Hope. Civil service list, 1896.
Cape of Good Hope. Report of the Meteorological Commission, 1880-1908.
Cape of Good Hope. Report of the Public Examiners, 1863, 1869-1873.
Cape of Good Hope. Report of the Surveyor-General, 1880.
Charles Abercrombie Smith. Ancestry. Retrieved on 3 November 2020 from https://www.ancestry.com/genealogy/records/charles-abercrombie-smith-24-g8f64g
Dictionary of South African biography, Vol. 2, 1972.
History of meteorology in South Africa. Weather Bureau News Letter, centenary edition, 1960, No. 139, pp. 1-48 (whole number).
Royal Society of South Africa. Transactions, 1908-1910, Vol. 1 and 1917, Vol. 6: Lists of Fellows and members.
South African Association for the Advancement of Science. Report, 1916, paper by Smith.
South African bibliography to the year 1925. London: Mansell, 1979.
South African Philosophical Society. Transactions, 1877-1907, Vol. 1-4, 6-10, 16, 17.
South African who's who, 1908, 1919/20.
University of the Cape of Good Hope. Calendar, 1875-1917/8.
University of the Cape of Good Hope (1899-1918) and University of South Africa (1918-1987). Register of honorary degrees conferred. (Handwritten register, Unisa archives, Pretoria).
Who was who, Vol. 2, 4th ed. London: Adam & Black, 1967.