List of sources:
1820 Settler Genealogies, at http://www.1820settlers.com/genealogy/index.php Search for Hutton, Henry.
Cape of Good Hope. Report of the committee of the Albany Museum, 1891, 1894, 1895.
Cape of Good Hope. Civil service list, 1887.
Grahamstown Journal, 15 March 1856, p. 2, "Literary, Scientific and Medical Society"; 11 October 1867, p. 3, "Albany Natural History Society" (lecture by P. MacOwan).
Grahamstown Philomatic Society. Minute Book, 15 February 1849, list of members. (Bowker Collection, Albany Museum).
Gunn, M. & Codd, L.E. Botanical exploration of southern Africa. Cape Town: Balkema, 1981.
Harvey, W.H. & Sonder, O.W. Flora Capensis, being a systematic description of the plants of the Cape Colony, Caffraria, and Port Natal (Vol. 1). Ashford, Kent: Lovell Reeve, 1894 (originally published 1860).
MacOwan, P. Personalia of botanical collectors at the Cape. Transactions of the South African Philosophical Society, 1886, Vol. 4, pp. xxx-liii.
Malherbe, D.F. du T. Family register of the South African nation (3rd ed.) Stellenbosch: Tegniek, 1966.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Henry Hutton.
South African Agricultural Register and Eastern Province Magazine, 14 July 1859, No. 39, pp. 482-483, "Albany Agricultural Society".