Subject
- Reports8
- Military intelligence6
- Second World War (1939-1945)4
- Telegraph lines4
- Diplomacy3
- Trade (practice)3
- Trade statistics3
- Bolshevism2
- Diaries2
- Exports2
- Imports2
- Military operations2
- Propaganda2
- Refugees2
- Road transport2
- Surveys2
- Telegraph poles2
- Telegraphs2
- Aggression and violence1
- Anglo-Soviet invasion of Iran (1941)1