- FondsA1138 - James Charles Napoleon Humphreys, Mining papers
- SeriesA - West Rand Producers
- File1 - Randfontein Estates
- Item1.1 - Underground plan, Battery Section (Rietvlei no. 113)
- Item1.2 - Underground plan of Leader, Horsham and East Reef workings
- Item1.3 - Underground plan of Leader, Horsham and East Reef workings
- Item1.4 - Underground plan of West Reef, Lindum Reef and Black Reef workings
- Item1.5 - Underground plan of Leader, Horsham and East Reef workings
- Item1.6 - Underground plan of West Reef and Lindum Reef workings