John's Treasure Box

 is a metal box in Northwestern Scrapyard, containing:
 * Grognak the Barbarian,
 * U.S. Army: 30 Handy Flamethrower Recipes and
 * Guns and Bullets.

It can be unlocked using John's Key, which is on a random encounter: A Wastelander being attacked by three dogs. The Wastelander will also have a note describing where to find the box.


 * The encounter can be anywhere in the game where you can have a random encounter. You might also just find the corpse of the Wastelander, when the dogs have run off or disappeared.

The box is a Hard lock, so it may be opened even without the key.