Category:Electrical telegraphy

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

The long-distance transmission of messages or information via electrical signals, usually over telecommunications lines or radio

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.