List of sources:
Cape of Good Hope. Report of the Trustees of the South African Museum, 1897, 1898.
Cape of Good Hope Government Gazette, 9 January 1885, pp. 44-45, List of licensed chemists and druggists in the Cape Colony.
FamilySearch: Wilhelm Ludwig Oscar Mally. https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSQF-ZJKD?view=index&action=view&cc=2517051&lang=en AND https://www.familysearch.org/ark:/61903/3:1:33SQ-G56S-9G5W?view=index&action=view&cc=1779109&lang=en
Medical and pharmacy register for the Colony of the Cape of Good Hope, 1893.
National Automated Archival Information Retrieval System (NAAIRS). http://www.national.archives.gov.za/naairs.htm Documents relating to Ludwig Mally.
Ryan, M. A history of organised pharmacy in South Africa, 1885-1950. Society for the History of Pharmacy in South Africa, 1986.
South African Association for the Advancement of Science. Report, 1903, 1905/6: Lists of members.
South African Philosophical Society. Transactions, 1897-1907, Vol. 9-11, 16, 17: Lists of members.