List of sources:
Argus Annual and South African Directory [Cape Almanac], 1890-1894.
Cape of Good Hope. Report of the trustees of the South African Museum, 1898.
ETYFish Project. http://www.etyfish.org/lampriformes/
as on 10 November 2016.
FamilySearch: George Henry Redmore Fisk. https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSQX-49PD-K?view=index&personArk=/ark:/61903/1:1:QGLX-1P9S&action=view
General Directory of South Africa, 1890/1, clerical directory.
Grahamstown Journal, 9 July 1889, p. 2; also Grocott's Penny Mail, 9 July 1889, p. 2: S.A. Geological Society.
Marloth, [H.W.]R. The progress of natural science in relation to South Africa during the last ten years. Transactions of the South African Philosophical Society, 1890-1895, Vol. 8, pp. civ-cxxi.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Fisk, George Henry Redmore / Fisk, G.H.R.
Robertson, H. Biodiversity
explorers. http://www.biodiversityexplorer.org/people as on 10 November 2016.
Royal Society of South Africa. Transactions, 1908-1910, Vol. 1, list of members.
South African bibliography to the year 1925. London: Mansell, 1979.
South
African Commercial Advertiser, 1 May 1852: Marriage. Retrieved from http://www.eggsa.org/newspapers/index.php/south-african-commercial-advertiser/206-saca-1852-apr-jun on 10 November 2016.
South African Philosophical Society. Transactions, 1877-1907, Vol. 1-4, 6, 8-11, 16, 17.