Basically, there isn't any, because no complete record of the game's lore even exists - the two Lore books give a lot of information, but they're hardly complete (not to mention there are plenty of acknowledged errors and typos in them, so take them at the very least with an open mind). It's the main reason this very forum exists, a place for players to discuss the lore and correlate what we know and discover. There are websites around where players have tried writing down as much of the lore as possible, but again they're not complete, and probably never will be, such is the nature of the beast.

Really, if you have any questions about the lore, ask on this forum! As I said, it is what it is here for!