List of sources:
Campbell Collections: Button family papers, at http://campbell.ukzn.ac.za/?q=node/23090
Retrieved on 2016-1-27.
List of voters for members of the Legislative Council for the township or borough of Durban, for the year ending 31st August 1881. The Natal Government Gazette, 7 September 1880, pp. 644-661.
London Times, 6 October 1882, page 1, hosted by Rootsweb. http://freepages.genealogy.rootsweb.ancestry.com/~tinlin/lte.htm
Retrieved 2016-1-27.
Natal almanac, directory and yearly register, 1898, 1899: Natal Botanic Gardens.
Natal Botanic Gardens. Report, 1897.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Button, Frederick.
Quickelberge, C. Collections and recollections. The Durban Natural History Museum, 1887-1987. Durban Natural History Museum, 1987.
[Sanderson, J.] The study of natural history, and the association for its promotion. Natal almanac and yearly register, 1869, pp. 60-66.