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Subject
- Railroads58
- Roads20
- Airways7
- History6
- Administrative and political divisions4
- Historical geography3
- Boundaries2
- World War, 1914-19182
- Diplomatic and consular service1
- Harbors1
- Historic sites1
- Local transit1
- Maps1
- Military bases1
- Napoleonic Wars, 1800-18151
- Real property1
- Streets1
- Territorial expansion1
- Territorial questions1
- World War, 1939-19451
