List of sources:
Agricultural Journal (Union of South Africa, 1911-1913, Vol.1-5.
National Archives Repository (TAB), Source MHG, Vol. 0, Ref. 3773/40: death notice, Rees Alfred Davis.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Davis, Rees Alfred; Davis, R.A.
National Union Catalogue, pre-1956 imprints. London: Mansell, 1968-1980.
Rosenthal, E. Southern African dictionary of national biography. London: F. Warne, 1966.
South African Association for the Advancement of Science. Report, 1905/6, list of members.
South African bibliography to the year 1925. London: Mansell, 1979.
South African who's who, 1908, 1917/8, 1927/8.
Transvaal Agricultural Journal, 1904-1910, Vol. 4-9.
Transvaal Colony. Report of the Department of Agriculture, 1902, 1902/3, 1903/4, 1905/6, 1907/8.
Union of South Africa. Public service list, 1914.