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Anderson, J.M. & Anderson, H.M. Palaeoflora of southern Africa (p. 61). Rotterdam: Balkema, 1985.
Cape of Good Hope. Civil service list, 1896, 1902.
Cape of Good Hope. Report of the committee of the Albany Museum, 1887.
De Zuid-Afrikaan, 4 July 1889, p. 2, De Conferentie van Onderwijzers.
Eastern Province Naturalists' Society. Minute Book No. 2, pp. 154, 163.
FamilySearch: David Duckworth Fraser. https://www.familysearch.org/ark:/61903/1:1:6ZL2-6WDM and https://www.familysearch.org/tree/person/details/GG7B-19R
Fraser, Margaret. South African settlers. Retrieved from http://www.southafricansettlers.com/?cat=30&paged=3
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General directory and guide-book to the Cape of Good Hope and its dependencies, 1886, p. 278.
Grahamstown Journal, 8 July 1890, p. 3, Teachers' Conference at Port Elizabeth; 30 June 1891, p. 2-3, The Teachers' Conference at Kimberley.
Grocott's Penny Mail, 9 July 1890, p. 3, Teachers' Conference.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to David Duckworth Fraser / D.D. Fraser.
Plug, C. & Levin, G. The South African Geological Association (1888-1890). Africana Notes and News, 1991, Vol. 29(7), pp. 251-261.
Schönland, S. Plant life in South Africa during past geological ages (abstract). E.P. Magazine, January 1893, Vol. 1(2), pp. 27-28.
South African bibliography to the year 1925. London: Mansell, 1979.
Swinton, W.E. Harry Govier Seeley and the Karroo reptiles. Bulletin of the British Museum (Natuarl History), Historical Series, 1962, Vol. 3(1), pp. 1-39 (letter by D.R. Kannemeyer, pp. 35-36).