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| Culper Spy Ring. (2) |
| Espionage -- New York (State) -- Long Island -- Sources. (2) |
| Tallmadge, Benjamin,1754-1835. (2) |
| Townsend, Robert,1753-1838. (2) |
| United States -- History -- Revolution, 1775-1783 -- Cryptography. (2) |
| United States -- History -- Revolution, 1775-1783 -- Secret service -- Sources. (2) |
| Washington, George,1732-1799 -- Correspondence. (2) |