Any good grad books on quantum gravity? Preferably something that has a good history of the subject and sets up current research efforts?

I'm 1.5 years into my grad program, currently in a theory group that does boring method development for scattering problems. However, as I am finishing up my GR course, I finding I absolutely love GR. My University only has one quantum gravity, and he is an 80 year old Brazilian who has one leg out in the grave and barely speaks english. I'd like do some self study before I jump groups just so I know what I'm getting into.