List of sources:
Agricultural Journal (Union of South Africa), 1911, Vol. 1-2, articles by Walters.
Google scholar. http://scholar.google.co.za/
National Automated Archival Information Retrieval System (NAAIRS). http://national.archives.gov.za/naairs.htm Documents relating to Walters, J.A.T.
Proceedings of the Rhodesia Scientific Association, 1917-1918, Vol. 16(2), pp. 30-32, list of members.
Report of the South African Association for the Advancement of Science, 1910, list of members.
Southern Rhodesia. Report of the Director of Agriculture, 1913, 1914.
Transactions of the Royal Society of South Africa, 1917, Vol. 6, list of members.
Transvaal Agricultural Journal, 1910, Vol. 9, article by Walters.