List of sources:
Chemical and Metallurgical Society of South Africa. Proceedings, 1897, Vol. 1 and 1899, Vol. 2: lists of members.
Chemical, Metallurgical and Mining Society of South Africa. Proceedings, 1903, Vol. 3, list of members; Journal, 1907-1914, Vol. 5, 6, 7, 9, 11, 12, 13 and 14.
eGGSA Library, at http://www.eggsa.org/library/main.php?g2_itemId=2808540
as on 2016-8-29.
Geni, at https://www.geni.com/people/Walford-Dowling/6000000035502830938
as on 2016-8-29.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Dowling, Walford Robert.
South African Association for the Advancement of Science. Report, 1918, list of members.
South African bibliography to the year 1925 (Stokes, R.S.G.). London: Mansell, 1979.