I just purchased Cogrove’s book, which looks really good:
This book also looks really good. Also, the author has actually trained top grapplers:
There was one more book out there… I can’t remember the name of it… Cosgrove mentioned it in an interview he did on another site. He gave it accolades. The guys who wrote it incorporate a lot of dinosaur-style training. I can’t remember its name, though!
If you think of it (or know of any other good books), please post them here.