J.E. Sawyer's Fallout Role-Playing Game
J.E. Sawyer's Fallout Role-Playing Game is a Fallout tabletop role-playing game which was being created by J.E. Sawyer, one of the makers of Van Buren, Black Isle's canceled Fallout 3, and the lead designer and project director of Fallout: New Vegas. It was started on October 23, 2004 (exactly 73 years before the Great War). Just like us, J.E. used a wiki, but one in which only he could edit pages.
While Sawyer no longer works at Interplay and the game is not canon, it includes details about factions, locations and other plot elements from Van Buren, such as Caesar's Legion and Hecate, therefore such information may be considered semi-canon, just like Van Buren leaks, as long as it doesn't contradict further canon sources. During Van Buren development Sawyer was responsible for New Canaan and Burham Springs design documents and document called "Josh's ULYSSES part 2", mentioned at Boulder design document.
J.E. Sawyer's wiki for the system is not online anymore, but all of its contents were transferred to The Vault (see above link for navbox and links).