Elijah's Watch journal

 is a Holotape in the Fallout: New Vegas add-on Old World Blues. It can be found at Elijah's Watch.

Explanation
In this note Elijah discusses his last observation post he established at the Big Empty. The first post was located in the Little Yangtze Watchtower. It was here he experimented with the Bomb Collars worn by Little Yangtze's inhabitants, which he then used to force the Courier along with Dog, Christine Royce, and [[.