- FondsA1138 - James Charles Napoleon Humphreys, Mining papers
- SeriesZZZ - Belgian Congo
- 4 more...
- File3304 - Gold in Belgian Congo - Kilo Goldfields
- File3305 - Katanga
- File3306 - Pioneers of Belgian Congo
- File3307 - Power Plants Belgian Congo
- File3308 - Radium in Belgian Congo
- File3309 - Railways in the Belgium Congo
- File3310 - Tin in Belguim Congo
- File3311 - Trabeka Company
- File3312 - Union Miniere du Haut Katanga