List of sources:
Agricultural Journal of the Cape of Good Hope, 1898, Vol. 13; 1909, Vol. 35: papers by Freer.
Cape of Good Hope. Report of the Colonial Bacteriological Institute, 1897.
Cape of Good Hope. Report of the Colonial Veterinary Surgeon, 1897-1902, 1905-1907.
Curson, H.H. The veterinary profession in South Africa... Journal of the South African Veterinary Medical Association, 1931, Vol. 2(2), pp. 95-101.
Diesel, A.M. The early veterinarians of the Cape. Journal of the South African Veterinary Medical Association, 1953, Vol. 24(4), pp. 191-196.
FamilySearch: George William Freer. https://www.familysearch.org/tree/person/details/GSL1-H43 as on 20 May 2024.
Henning, M.W. Animal diseases in South Africa (Vol. 2, pp. 490-496). Central News Agency (SA), 1932.
Journal of the South African Veterinary Medical Association, 1927, Vol. 1(1), pp. 84-85: List of members.
Obituary: George William Freer. Journal of the South African Veterinary Medical Association, 1935, Vol. 6, p. 195.
Posthumus, P.J. An index of veterinarians in South Africa (4th ed., 2 vols). Pietermaritzburg: P.J. Posthumus, 1982.
Union of South Africa. Public service list, 1914.