Subject
- Trade (practice)59
- Piracy53
- Slave trade48
- Diplomacy46
- Treaties39
- Agriculture34
- Reports33
- Meteorological data32
- Military administration29
- Military personnel28
- Persian Gulf Campaign (1819)28
- Bilateral relations25
- Harbours23
- Military intelligence22
- Naval affairs19
- International relations18
- Maritime transport17
- Military operations17
- Political intelligence17
- Colonial administration15