- collectionA1138 - James Charles Napoleon Humphreys, Mining papers
- Série organiqueB - West Rand General
- Dossier31 - Queen's Gold Mining Co., Krugersdorp
- Dossier32 - Middelvlei Estate and Gold Mining Co., Ltd.
- Dossier33 - Witwatersrand Mineral Exploration Co., Ltd.
- Dossier34 - Brinks Vlakfontein Con. Gold Mining Co., Ltd.
- Dossier35 - Union Minerals Exp. Co., Ltd.
- 30 en plus...