If you haven't read 'Holy Blood Holy Grail' yet go find that one Blue. That's where Dan Brown got his ideas, but, judging by your posts in other threads, I suspect you're already aware of it.
I abandoned reading 'Its the Crude Dude' by some canadian journalist. I couldn't take it even though she covered some John D. Rockefeller and other lessor known oil history.
Now I'm starting on 'America for Sale' by Jerome Corsi.