Category:Electrical telegraphy

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IEEE GHN Category

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.

Media in category "Electrical telegraphy"

The following 2 files are in this category, out of 2 total.