Jefferson Davis', the President of the Confederate States of America, first message.

Jefferson Davis's First Message

Jefferson Davis', the President of the Confederate States of America, first message.

Statue of Hermes (Mercury).

Hermes

Statue of Hermes (Mercury).

A signal book used in the United States Navy which includes a key to interpret messages.

Signal Book

A signal book used in the United States Navy which includes a key to interpret messages.

Telegraphy is the long distance transmission of written messages without physical transport of letters. A telegraph is a device for transmitting and receiving messages over long distances.

The Inner Workings of Telegraphy

Telegraphy is the long distance transmission of written messages without physical transport of letters.…