I read "A Brief History..." a couple months ago -- definitely anything but brief but I really really enjoyed it. Don't know how far you are into it but it gets crazier and crazier as it goes along!

And if you haven't already, another book to check out is "The Natural Mystics: Marlye, Tosh, and Wailer" by Colin Grant. It's probably the best book I've read about the Wailers. First of all, it puts pretty much equal focus on all of the Wailers, as opposed to mostly Nesta, plus they weave a lot of history about the country of Jamaica in with the story. I don't know how deep into 60s/70s reggae you are, but an interesting story was about Delroy Wilson's big brother, nicknamed Batman. Apparently he was a big time rudeboy in Kingston, and demanded a group write a song about him. So the Slickers' "Johnny Too Bad" from The Harder They Come is about him.

Anyway, I highly recommend it!