Subject
- First World War (1914-1918)16
- Mesopotamian Campaign (1914-1918)10
- Diplomacy6
- Frontiers3
- Muslims3
- Political intelligence3
- Prisoners of War3
- Boundaries2
- Civil aviation2
- Civil service2
- Consular services2
- Elections2
- First World War campaigns2
- Insurrections2
- International trade2
- Passports2
- Postal services2
- Public administration2
- Railways2
- Rebellions2