I guess I have to ask what data specifically are you looking for? I've never requested factory letters but it seems like they are good for identifying the dates that guns were shipped in and out of the factory warehouse and where they were shipped to. I would guess Cody has pretty much the same info. Couldn't this data be used to establish a chronology for production? Even if it had issues as you mentioned it still would be something worthy of putting together. Then again maybe I'm not fully understanding the problem here.
