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Start Over Subjects Telecommunications ✖Remove constraint Subjects: Telecommunications Titles Description of the American electro magnetic telegraph: now in operation between the cities of Washington and Baltimore ✖Remove constraint Titles: Description of the American electro magnetic telegraph: now in operation between the cities of Washington and Baltimore Dates by Range 1800-1849 ✖Remove constraint Dates by Range: 1800-1849

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  • Description of the American electro magnetic telegraph: now in operation between the cities of Washington and Baltimore1