Description of the American electro magnetic telegraph : now in operation between the cities of Washington and Baltimore / by Alfred Vail.
- Vail, Alfred.
- Date:
- 1845
Licence: Public Domain Mark
Credit: Description of the American electro magnetic telegraph : now in operation between the cities of Washington and Baltimore / by Alfred Vail. Source: Wellcome Collection.
Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)
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