- FondsA1138 - James Charles Napoleon Humphreys, Mining papers
- SeriesZZZ - Belgian Congo
- File3300 - Belgian Congo
- File3301 - Ciments du Katanga
- File3302 - Forminiere (The.)
- File3303 - Geology of Belgian Congo
- File3304 - Gold in Belgian Congo - Kilo Goldfields
- File3305 - Katanga
- File3306 - Pioneers of Belgian Congo
- File3307 - Power Plants Belgian Congo
- File3308 - Radium in Belgian Congo
- 4 more...