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Council for Geoscience. Catalogue of publications of the Geological Survey and government publications in the earth sciences (compiled by R.R.M. Price). Pretoria: Council for Geoscience, 1997.
Draper, D. Catalogue of the "Rupert Jones" collection of papers and manuscripts. Transactions of the Geological Society of South Africa, 1898, Vol. 4, pp. 77-86.
FamilySearch: George Fleetwood Gilfillan. https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSQX-W3Z1-3?view=index&personArk=/ark:/61903/1:1:QGTD-8H7L&action=view and https://www.familysearch.org/tree/person/details/LZ4K-BVY
George Fleetwood Gilfillan. Retrieved from http://www.1820settlers.com/genealogy/getperson.php?personID=I10098&tree=master
on 2017-1-17.
Grahamstown Journal, 15 March 1878, p. 2, Fatal accident; 20 March 1878, p. 2, Death of Mr Gilfillan.
Hall, A.L. A bibliography of South African geology to the end of 1920. Pretoria: Geological Survey, Memoir No. 18, 1922.
Heese, J.A. South African genealogies. Pretoria and Stellenbosch, 1986-2005.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Gilfillan, George Fleetwood.
Schwarz, E.H.L. The discoveries of economic importance made by the Albany pioneers. Report of the South African Association for the Advancement of Science, 1908, pp. 49-63.