Flintlocks is a good read, but I guess I saw it as more of a general muzzleloading shooting book that doesn't mention caplocks rather than a hardcore flintlock shooting book. It's rather spare of information on how to best mount/orient/knap your flints, and should at least have had pictures of properly setup, more common locks. IMO. It ignores completely all modern production guns, which I'm pretty sure 99% of new flintlock shooters start out with. Pretty much every single picture is of beautiful, but expensive custom guns.
Still, there is a lot of good information there.