| Answer | Crossword Clue |
|---|---|
| SIGNSEEN | First part of a message |
| CABLED | Sent a message: "Hack the Mexican up on the first of December" (6) |
| VENI | First word of Caesar's message. |
| HATH | Second word of first telegraphic message. |
| TWEET | Type of message first sent in 2006 |
| SEENOEVIL | First monkey's message |
| WEATHERISSUPERB | First vacation postcard message |
| HATH | Word in the first telegraph message |
| HATH | Word in the first Morse message |
| HATH | Verb in the first telegraph message |
| HATH | Verb in the world's first telegraph message |
