Bill Gillingham of Great Valley Serpentarium. If he is giving out wrong information on what he breeds & sells, he should know.
I personally would not go by some of the TFH books out there for reliable reference. I have found several mistakes in alot of their publications, including snakes with wrong pics(atlas book of snakes).
The "living snakes of the world" is pretty good, different publisher. This book is a general overview.