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Subjects
- Intelligence service--Great Britain.1
- Naval convoys.1
- Navy-yards and naval stations, French.1
- Sailors--United States.1
- Spies.1
- Torpedoes.1
- Transatlantic voyages.1
- Transportation, Military.1
- Warships--Camouflage.1
- World War, 1914-1918--Camouflage.1
- World War, 1914-1918--Campaigns--Atlantic Ocean.1
- World War, 1914-1918--Naval operations, American.1
- World War, 1914-1918--Transportation.1