List of sources:
Chemical, Metallurgical and Mining Society of South Africa. Proceedings, 1902-1903, Vol. 3, list of members; Journal, 1904/5, Vol. 5, Members.
Durham Mining Museum.
Mining engineers. Retrieved from http://www.dmm.org.uk/transime/u01-mg.htm on 2017-1-10.
FamilySearch: Rowland Gascoygne. https://www.familysearch.org/ark:/61903/3:1:3Q9M-C91P-C95P-L?view=index&personArk=/ark:/61903/1:1:W75X-SZ6Z&action=view and https://www.familysearch.org/tree/person/details/KJK4-Z24
Hall, A.L. A bibliography of South African geology to the end of 1920. Pretoria: Geological Survey, Memoir No. 18, 1922.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Rowland Gascoyne / R. Gascoyne.
Royal Society of London. Catalogue of scientific papers [1800-1900]. London: Royal Society, 1867-1925.