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American telegraph system, semaphoric as well as magnetic American semaphore or marine signals, connected with the electro-magnetic telegraph /

Corporate Author: Making of the Modern World
Other Authors: Rogers, Henry J., 1811-1879., Black, Furman., O'Reilly, Henry, 1806-1886.
Format: Online Book
Language:English
Published: [United States? : s.n., 1846?]
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Online Access:Full text online
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