- FondsA1138 - James Charles Napoleon Humphreys, Mining papers
- SeriesDD - Natal
- File1030 - Natal
- File1031 - Vryheid Gold
- File1032 - Natal Cambrian Collieries
- File1033 - Natal Coal Industry
- File1034 - Batal Navigation Colliery
- File1035 - Limestone in Natal
- File1036 - Natal Land Colonization Co.
- File1037 - Geol. Survey 1913 Portion of Ngotsche Div. N. Natal - Humphrey
- File1038 - Geol. Survey 1912 Northern Natal-Vryheid-Pongolar - Humphrey
- 12 more...