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Barberton Scientific and Literary Society. Proceedings, 1888-1889.
Dictionary of South African biography, Vol. 1, 1968, George H. Farrar.
Draper, J.R. The engineer's contribution: A history of the South African Institution of Mechanical Engineers, 1892-1967 (p. 2). Johannesburg: SAIME, 1967.
FamilySearch: Sidney Howard Farrar. https://www.familysearch.org/search/record/results?q.anyDate.from=1856&q.givenName=Sidney Howard&q.surname=Farrar
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Retrieved 26 October 2016.
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Wills, W.H. The Anglo-African who's who and biographical sketch book. London: Upcott, 1910.