That's a reference to Wasteland 1, as you probably know.
Here's the thread Atomic Postman created for his world book and here's the final version. If I understand correctly it's based on a merger of New Vegas and Van Buren. Elements of both.
Fallout Revelation Blue or Fallout Revelation Blues as it's called now is a total conversion mod for Fallout: New Vegas that attempts to recreate the abandoned Van Buren project. There's a demo out on Nexus that you can try and that feature the Burham Springs location.
Check out the first post...
Sounds like a plan! I completed PoE when it released. Then I started another playthrough just before the release of the sequel in order to complete the White March DLC. But when I arrived there I lost the interest even though that's supposed to be the best content of the game... But I will have...