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Category:Electrical telegraphy

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An electric telegraph developed by George Beardslee in 1862 - Image by Rebecca Robbins Raines and The U.S. Army Signal Corps
An electric telegraph developed by George Beardslee in 1862 - Image by Rebecca Robbins Raines and The U.S. Army Signal Corps

Pages in category "Electrical telegraphy"

The following 7 pages are in this category, out of 7 total.

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Media in category "Electrical telegraphy"

This category contains only the following file.

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