List of sources:
Albany Natural History Society. Minute Book, 1890-1892. (Albany Museum for Natural History, Grahamstown).
Cape of Good Hope. Report of the committee of the Albany Museum for 1890, 1891, 1897, 1898.
Eastern Province Magazine, 1892, Vol. 1(1), pp. 1-4: Editorial; 1895, Vol. 2(5), pp. 214-215: Proceedings of the society.
FamilySearch: William Roger Chew. https://www.familysearch.org/search/record/results?q.givenName=william roger&q.surname=chew
General directory of South Africa, 1903, 1908, 1916: Directory of Port Elizabeth.
Grahamstown and Albany Horticultural Society. First show. Grahamstown: J. Slater, 1897. (Bowker Collection, 1820 Settler's Museum, Grahamstown).
Grahamstown Journal, 12 February 1891, p. 3: Albany Museum; 26 March 1891, p. 4: Albany Natural History Society; 10 December 1891, p. 2: (Advertisement) Albany Natural History Society; 17 March 1892, p. 2: Albany Natural History Society; 9 June 1892, p. 2: Eastern Province Literary and Scientific Society; 2 July 1892, p. 2: Literary, Scientific and Medical Society; 20 June 1896, p. 4: Albany Museum; 26 June 1897, p. 3: Literary, Scientific and Medical Society.
Literary, Scientific and Medical Society. Minute Book, 1898-1903, p. 1-2. (Albany Museum for Natural History, Grahamstown).
Medical and pharmacy register for the Colony of the Cape of Good Hope, 1893, 1907.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Chew, William Roger / Chew, W.R.
Pietermaritzburg Archives Repository, Vol. NMC 34: [List of medical practitioners in the Cape Province, as on 31 December 1915].
South African Medical Directory for 1897. Cape Town: Cape Times, 1897.
South African Medical Journal, 2nd series, 1895, Vol. 3(7), p. 205; 1898, Vol. 5, pp. 279-280: Eastern Province Branch, British Medical Association.
The Southern African History Musings of Ross
Dix-Peek. The roll of various South Africans who attended Edinburgh University
and served during World War I. http://peek-01.livejournal.com/97521.html
University of the Cape of Good Hope. Calendar, 1903-1904, pp. 288-298: Graduates of other universities admitted.