Subject
- Trade (practice)273
- Second World War (1939-1945)267
- Colonial administration264
- Diplomacy218
- Reports211
- Marine navigation195
- Military intelligence180
- Treaties180
- Weather168
- International relations166
- Ships logs163
- Bilateral relations151
- First World War (1914-1918)151
- Military operations119
- Concessions118
- Petroleum industry115
- Slave trade106
- Military administration105
- Railways105
- Boundary disputes104