The following is based on Van Buren and has not been confirmed by canon sources.
The Burham Springs design document for the Van Buren project (Black Isle's canceled Fallout 3) was leaked from a top secret source on November 25, 2005 at No Mutants Allowed. It was written by J.E. Sawyer and is a complete description of all places, characters and quests in the location "Burham Springs".
Edit
