Magnetic telegraph. Letter from the Secretary of the Treasury, transmitting a letter from Professor Morse, relative to the magnetic telegraph. December 23, 1844. Read, and laid upon the table
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1 online resource (18 pages) : illustrations, tables - Publisher: [Washington, D.C.] : [publisher not identified], 1844.
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General Note: | Batch processed record: Metadata reviewed, not verified. Some fields updated by batch processes. FDLP item number not assigned. |
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Subject: | Electricity Inventions Revenue Scientific apparatus and instruments Telecommunication lines Telegraph Cost Research |
Genre: | Legislative materials. |