The BEST $10 I've ever spent on my photography.
I knew nothing about the Grand Tetons other than it was a great place to go for wildlife and landscape photography. I heard about Jeff Clow via a friend who had taken part in one of his guided tours. Googling his name, I came across this eBook.
Jeff's layout and flow of his book is perfect for either following front-to-back or for picking and choosing where and what to do. His recommendations on lenses, views, and times for the best image creation is spot on.
If you are going to the Grand Tetons, this is an absolute MUST purchase - for all levels of photographer or lover of nature.