Telegram
Telegram
A telegram is a written or printed message, originally sent through telegraphy. The use of the telegrams was popular for social and business correspondence in the latter half of the 19th and the first half of the 20th century. Even in the telephone age, the telegram remained popular, and spawned its own style of writing that in turn persisted in other media. Telegram services still exist today, though the popularity has largely waned, replaced by other forms of text communication.
Telegram

Terminology
Initially, telegrams were sent by an electrical telegraph operator or telegrapher using Morse code, or a printing telegraph operator using plain text. A cablegram was a message sent by a submarine telegraph cable, often shortened to "cable" or "wire". The suffix -gram is derived from ancient Greek: γραμμα (gramma), meaning something written, i.e. telegram means something written at a distance and cablegram means something written via a cable, whereas telegraph implies the process of writing at a distance.